ライフサイエンスコーパス: weathering

1 nces in abundance, recent exposure, or space weathering.

2 ificial seawater during simulated UV-induced weathering.

3 tential to sequester carbon through chemical weathering.

4 s of time through environmental exposure and weathering.

5 strate effects of chemicals liberated during weathering.

6 fication of this plastic as a consequence of weathering.

7 ty of the basic concept of enhanced silicate weathering.

8 become mobilized in high pH leachate during weathering.

9 commonly used to calculate the extent of oil weathering.

10 ned with the oxygen sensitivity of oxidative weathering.

11 on is a novel and unexpected aspect of space weathering.

12 o can reflect the mineral source of chemical weathering.

13 avy metal remediation, and the prevention of weathering.

14 ervoir, which was consumed through oxidative weathering.

15 y than carbon sequestration through silicate weathering.

16 as a reference for the release rate of Na by weathering.

17 imbalance demanding extremely low levels of weathering.

18 ls both silicate glass corrosion and mineral weathering.

19 ) and deep microbial communities and mineral weathering.

20 iansen Feature consistent with reduced space weathering.

21 rface material by solar heating and/or space weathering.

22 , potentially through changes in continental weathering.

23 mectite precursor, a process akin to reverse weathering.

24 he matching of diesel oil spills affected by weathering.

25 in situ biological contributors to incipient weathering.

26 substances was investigated for biophysical weathering.

27 This finding makes opal formed by rocks weathering a new, complementary source of animal fossils

28 iderophores and organic acids as biochemical weathering agents was shown.

29 Bedrock fracture systems facilitate weathering, allowing fresh mineral surfaces to interact

30 ered bedrock, with intervals of more intense weathering along fractures, documenting the combined inf

31 eas of later theoretical constructs, such as weathering and allostatic load, regarding the power of c

32 Here, we use models for erosion, weathering and biogeochemical cycling to show that this

33 lithologies contribute to efficient chemical weathering and carbon sequestration in the Southeast Asi

34 l parameters can vary, such as land area for weathering and CO(2) outgassing fluxes.

35 ir apparent relative surface ages from space weathering and cratering records.

36 total PCB measurements are unreliable due to weathering and degradation, while detailed full congener

37 Furthermore, to account for weathering and environmental factors, two equations mode

38 cord of seawater as a proxy of silicate rock weathering and erosion, we calculate changes in the inpu

39 hange in the partitioning of denudation into weathering and erosion.

40 observations are likely to also describe the weathering and flow path patterns in other headwater lan

41 position of the continental crust exposed to weathering and found that shales of all ages have a unif

42 ology in the context of landscape evolution, weathering and hydrology.

43 s global-scale information about continental weathering and is vital for marine uranium-series geochr

44 However, the mechanisms of marine olivine weathering and its effect on seawater-carbonate chemistr

45 rtance of subglacial aluminosilicate mineral weathering and lack of retention of these species in sed

46 rs unprecedented possibilities to study past weathering and landscape evolution processes.

47 m cycle is largely controlled by continental weathering and marine authigenic mineral formation, whic

48 -associated bacterial communities in mineral weathering and nutrient cycling in soils, with a specifi

49 cally, these elements are linked by chemical weathering and organism stoichiometry, but this coupling

50 elative influences of tectonics, continental weathering and seafloor weathering in controlling the ge

51 stems, organic matter decomposition in soil, weathering and soil formation, and contaminant behavior

52 opical mountainous rivers on global silicate weathering and suspended sediment transport.

53 of nutrients due to the enhanced continental weathering and the contemporary increase of atmospheric

54 can be applied in other settings to predict weathering and water quality responses to climate change

55 t topography undoubtedly shaped by subaerial weathering and/or erosion, it is obvious that northern S

56 vant inputs (atmospheric deposition, manure, weathering) and outputs (seepage water, biomass harvest)

57 pill samples to determine type and degree of weathering, and (iii) improving the matching of diesel o

58 ed that the timing for oxidative continental weathering, and by conventional thinking the onset of at

59 hin clay-rich sediments derived from in situ weathering, and exogenous clay and silt, which entered t

60 t chemical reactions associated with glacial weathering, and explore the implications for long-term g

61 ifer is dominated mainly by silicate mineral weathering, and no CO2 leakage signals have been detecte

62 k disaggregation, groundwater flow, chemical weathering, and the depth of the "critical zone" in whic

63 ay key roles in aggregate stability, mineral weathering, and the fate of contaminants in soils.

64 Connections between glaciation, chemical weathering, and the global carbon cycle could steer the

65 s where fragmented rocks are more exposed to weathering, and their position is less stable than in so

66 because biomarkers recalcitrant to long-term weathering are absent.

67 ver, these characteristic ratios of chemical weathering are altered by algal activity.

68 might be blocked, since kinetics of silicate weathering are typically strongly retarded at temperatur

69 fracturing that can trigger earthquakes and weathering, as well as, sequestration of CO2 and toxic m

70 em including geobiological feedbacks to rock weathering, atmospheric composition, and climate.

71 NETs, including direct air capture, enhanced weathering, bioenergy with carbon capture and storage an

72 basaltic bedrock relied strongly on Ca from weathering, but that soil N enrichment depleted readily

73 surface weak spots responsible for chemical weathering by hydrolysis.

74 Promotion of weathering by microorganisms is a well-documented phenom

75 s implies a strong negative feedback between weathering by non-vascular vegetation and Ordovician cli

76 plicit modelling approach to simulate global weathering by non-vascular vegetation in the Late Ordovi

77 dies that try to quantify the enhancement of weathering by non-vascular vegetation, however, are usua

78 anding of biophysical as well as biochemical weathering by S. commune could be reached and unexpected

79 sed terrestrial productivity and intensified weathering by the first land plants.

80 nsight into the influence that environmental weathering by, e.g., UV light has on related effects.

81 greening of the land' and intensification of weathering c. 0.85-0.54 Ga is currently equivocal.

82 ck river incision, the mechanism of chemical weathering can explain strong coupling between local cli

83 of atmospheric O2 Future work on glaciation-weathering-carbon cycle feedbacks should consider weathe

84 Ca + Mg] and HCO3(-) resulted from increased weathering caused by accelerated physical erosion of roc

85 F must be understood and evaluated under the weathering conditions of geologic disposal, which extend

86 Chemical weathering consumes atmospheric carbon dioxide through t

87 ge (AMD) formed from pyrite (iron disulfide) weathering contributes to ecosystem degradation in impac

88 column with plagioclase and alumino-silicate weathering contributing < 5% of the Ca(2+)-Na(+) solutes

89 We propose that weathering contributions of unradiogenic Nd modulated by

90 Here we show that climate-dependent chemical weathering controls the erodibility of bedrock-floored r

91 crease in nutrient delivery from continental weathering, coupled with a possible decrease in upwellin

92 The mineralized weathering crusts inherited REE signature of the granite

93 lements (HREE) are dominantly mined from the weathering crusts of granites in South China.

94 Here we detail a land-based enhanced weathering cycle utilizing magnesite (MgCO(3)) feedstock

95 hrough the water-mediated carbonate-silicate weathering cycle, atmospheric CO(2) partial pressure (pC

96 enudation flux that is derived from silicate weathering-decreased, sustained by an increase in erosio

97 h's surface comprises minerals diagnostic of weathering, deposition and erosion.

98 and global carbon and nitrogen budgets, the weathering depths and rates within subsurface are not we

99 , before 2.3 Ga, a muted oxidative supply of weathering-derived copper enriched in (65)Cu, along with

100 this, PTHM were traced to geogenic sources (weathering, dissolution, leaching) and anthropogenic emi

101 phere organisms play a major role in mineral weathering driving calcium fluxes from the continents to

102 on of free TiO2 nanoparticles is found to be weathering duration dependent.

103 e present work, we investigate the effect of weathering duration on a commercial photocatalytic nanoc

104 It is found that increased weathering duration results in stepwise structural deter

105 extrapolation of these quantities from short weathering durations, complete failure of the nanocoatin

106 organic-carbon burial or enhanced carbonate weathering during glacioeustatic sea-level regression ha

107 stable continental crust in response to deep weathering during northwardly migrating tropical conditi

108 y similar source diesels, (ii) investigating weathering effects on spill samples to determine type an

109 ganisms are essential agents of Earth's soil weathering engine who help transform primary rock-formin

110 pyrite oxidation-including oxygen sources-in weathering environments remains elusive.

111 ace and deep Earth, has been obscured by the weathering, erosion, and tectonism that followed its for

112 ved, which we attribute to cometary-specific weathering, erosion, and transient events driven by expo

113 te mineral maps improve our understanding of weathering, erosional and depositional processes in the

114 Land-based enhanced rock weathering (ERW) is a biogeochemical carbon dioxide remo

115 Enhanced silicate rock weathering (ERW), deployable with croplands, has potenti

116 anges may have been transient Neoproterozoic weathering events whose biogeochemical consequences were

117 ition probability before and after simulated weathering events.

118 we report results from a two-year incipient weathering experiment.

119 We show that this weathering feedback ought to produce a log-linear relati

120 rovides distinctive evidence that a silicate weathering feedback stabilizes Pco2 on million-year time

121 e cradle environment of life may have been a weathering fluid interacting with dry-land silicate rock

122 We estimate a potential global weathering flux of 2.8 (km(3) rock) yr(-1), defined here

123 ture exchange with oceanic crust or that the weathering flux of continentally derived Sr was especial

124 mass ( approximately 100), such that a given weathering flux of phosphorus could support more organic

125 We find that the global silicate weathering flux remained constant, even as the global si

126 tive minerals-rather than an increase in the weathering flux, has been proposed to reconcile these di

127 arming is required to double the continental weathering flux, versus 3-10 degrees C in previous work.

128 xtended by limitation of the global silicate weathering flux.

129 without requiring increases in the silicate weathering flux.

130 ee times larger than today's global chemical weathering flux.

131 idizing microorganisms control global pyrite weathering fluxes despite their ability to catalyze the

132 ine is consistent with changes in burial and weathering fluxes of organic carbon and pyrite driven by

133 s(5,6), and the magnitude of the increase in weathering fluxes-and even its existence-remain debated(

134 o Southern Oscillation (ENSO), might have on weathering fluxes.

135 dust transport, mass wasting, and insolation weathering for cometary surface evolution, and they offe

136 ther terrestrial planets such as Mars, where weathering-formed opal occurs.

137 tentially rock organic matter share the same weathering front depth with pyrite, contrary to models w

138 est extent of the water table determines the weathering front, and the range of annually water table

139 depth with pyrite, contrary to models where weathering fronts are stratified.

140 Compared with nonglacial weathering, glacial weathering is more likely to yield a

141 nd technological processes, such as, mineral weathering, glass alteration, zeolite syntheses and ceme

142 Mass-balance calculations indicate soil weathering has depleted over 40% of the original solid-p

143 Geochemical signals diagnostic of oxidative weathering, however, extend as far back as 3.3-2.9 Gyr a

144 The age of weathering, however, remains loosely constrained, which

145 K-Ar dating of authigenic, syn-weathering illite from saprolitic remnants constrains or

146 ic (221.3+/-7.0-206.2+/-4.2 Ma) through deep weathering in a warm climate and subsequent partial mobi

147 Both may contribute to biochemical weathering in addition to enzymatic functions.

148 ctonics, continental weathering and seafloor weathering in controlling the geological carbon cycle ar

149 ities, high rates of biogeochemical/physical weathering in ice sheets and storage and cycling of orga

150 assess biological and geochemical drivers of weathering in natural settings.

151 We analyzed weathering in shale, the most common rock exposed at Ear

152 a direct link between N fixation and mineral weathering in terrestrial ecosystems.

153 ytes significantly increased global chemical weathering in the Late Ordovician, thus reducing atmosph

154 be the cause of the observed channeling and weathering in the surface.

155 is three times the CO2 drawdown by silicate weathering in this basin.

156 Chemical weathering increases steadily upward in the weathered be

157 enudation and consequent changes in silicate weathering intensity reconcile marine isotope and erosio

158 (delta(18)O), and geochemical signatures of weathering intensity reveal a consistent pattern of dete

159 mained constant, even as the global silicate weathering intensity-the fraction of the total denudatio

160 Mineral weathering is a balanced interplay among physical, chemi

161 ur analysis supports the theory that glacial weathering is characterized predominantly by weathering

162 implemented in coastal environments, olivine weathering is expected to increase seawater alkalinity,

163 Moreover, we find that simulated weathering is highly sensitive to atmospheric CO2 concen

164 ial freshwaters due to glacial melt-enhanced weathering is likely a globally relevant phenomenon, wit

165 Compared with nonglacial weathering, glacial weathering is more likely to yield alkalinity/DIC ratios

166 ganic carbon burial, in addition to silicate weathering, is necessary to account for the positive del

167 about outgassing, modern fluxes and seafloor weathering kinetics.

168 However, shallow complex structures and weathering layers at near surface not only severely dist

169 he authors show how reduced rates of reverse weathering may be responsible for global cooling and inc

170 an airless body, or any surface where other weathering mechanisms may be ruled out.

171 An ice-hosted sedimentation and weathering model may provide a compelling description of

172 couples a global climate model to a silicate weathering model with spatially resolved lithology.

173 ing a coupled climate and carbonate-silicate weathering model, we quantify the likely scatter in pCO(

174 Therefore, the enhanced weathering modulated by initially increased pCO2 levels

175 es the temperature dependence of continental weathering must be weaker than commonly assumed.

176 This was likely due to the silicate weathering-negative feedback and the expansion of land p

177 Enhanced weathering of (ultra)basic silicate rocks such as olivin

178 Tl-bearing secondary minerals formed by the weathering of a Tl-As-Fe-sulfide mineralization hosted i

179 natural in source: that is, derived from the weathering of Antarctic continental rocks.

180 ely recycled into the surface environment by weathering of basalt and other magmatic rocks, at copper

181 that REE mass-partitioning during incipient weathering of basalt, rhyolite, granite and schist depen

182 The weathering of basalts also triggered the Sturtian glacia

183 inwash after the cessation of mining and the weathering of bedrock in the catchment.

184 Space weathering of Bennu surface materials does not simply pr

185 This is a consequence of rapid weathering of calcium silicate and hydroxide minerals de

186 ical model simulations suggest that enhanced weathering of carbonates driven by glacio-eustatically c

187 es to these biomarkers as induced by natural weathering of crude oil discharged from the Macondo Well

188 ompartmentalization of major elements during weathering of granite, rhyolite, schist and basalt was r

189 rate, due to counterbalancing changes in the weathering of isotopically light organic carbon.

190 absorbed by methane oxidation and oxidative weathering of land surfaces until approximately 800 Ma.

191 Accelerated weathering of limestone (AWL) has been proposed as a too

192 n alkalinity, which indicates the successful weathering of limestone and the long-term storage of the

193 al rhyolitic calderas formed on eruption and weathering of lithium-enriched magmas have the potential

194 70 kmol(c) ha(-1) y(-1), yet consistent with weathering of marine shale.

195 enic-rich acid mine waters have developed by weathering of native arsenic in a sulfide-poor environme

196 Before enhanced weathering of olivine in coastal environments can be con

197 robial phosphate sinks and enhanced chemical weathering of phosphate minerals under relatively CO(2)-

198 n rock surfaces where they can influence the weathering of rocks and minerals, these communities and

199 pisodic disturbances but instead the gradual weathering of soils and soil Ca availability.

200 le the biogeochemical forces influencing the weathering of spilled oil have been investigated for dec

201 Fe(II)]-oxidizing bacteria in biogeochemical weathering of subsurface Fe(II)-silicate minerals at the

202 dicate that the source of sulfate and TDS is weathering of sulfide minerals in the Capistrano Formati

203 es indicate a sudden enhancement in chemical weathering of the continental crust during the early Cam

204 The flux of solutes from the chemical weathering of the continental crust supplies a steady su

205 water twice during formation and subsequent weathering of the Crato Formation.

206 Bringing constraints on the timing of weathering of the Martian crust would help understand it

207 ica-rich fluids derived from the continental weathering of the volcanic host rocks.

208 Weathering of these enriched source rocks mobilizes and

209 drawdown from the atmosphere due to chemical weathering of these obducted ophiolites, and of CO2 addi

210 weathering is characterized predominantly by weathering of trace sulfide and carbonate minerals.

211 ering-carbon cycle feedbacks should consider weathering of trace sulfide minerals in addition to sili

212 resistance of glasses, or the biogeochemical weathering of volcanic glasses in seawater.

213 However, the potential influence of silicate weathering on atmospheric pCO2 levels on geologically sh

214 To evaluate the effects of glacial weathering on atmospheric pCO2, we use a solute mixing m

215 e studies should investigate implications of weathering on end consumer products containing additives

216 : see text] Pyrite oxidation during chemical weathering on land consumes [Formula: see text] and gene

217 Weathering on mountain slopes converts rock to sediment

218 SEM/EDS revealed characteristic surface weathering on the plastic surfaces.

219 ions proportional to DSi input from chemical weathering on timescales longer than the residence time

220 Apart from the effects of the weathering, our results suggest a second-order modulatio

221 onstrates how erosional forcing of carbonate weathering outweighs that of organic burial on geologica

222 total Fe and total As, implying that pyrite weathering posed a substantial stress on microbial devel

223 ommonly thought to represent pre-Pleistocene weathering possibly associated with landscape formation.

224 than micrometeoroid bombardment in the space-weathering process, or that micrometeoroid bombardment i

225 ent in new packing boxes is disrupted by the weathering process.

226 Oil weathering processes change the chemical composition of

227 pendent determination as to which of the two weathering processes contributes to the formation of oil

228 t to the importance of physical and chemical weathering processes in generating nutrients that suppor

229 Although weathering processes occur globally, no economic HREE re

230 e, hydrated minerals testify to past aqueous weathering processes that can be precisely studied in Ma

231 Weathering processes that changed the surface chemistry

232 flux of Fe isotopes to the ocean or tracing weathering processes using Fe isotopes in surface waters

233 lterations to the plastic from environmental weathering processes with success rates of 99, 81, 76, a

234 tent picture of linked chemical and physical weathering processes, acting over a 38-m-thick regolith

235 ithin, the properties of the receiving soil, weathering processes, and the concentration of PAHs.

236 important to understand the ongoing current weathering processes.

237 steranes were not systematically affected by weathering processes.

238 ft comparable biosignatures in the dissolved weathering products.

239 olina, provides unusual access to a complete weathering profile in an Appalachian granitoid.

240 spatial-temporal scales from vegetation-clad weathering profiles and hillslopes, small catchments, la

241 mineralogy and speciation of REE in economic weathering profiles from China to prospective regoliths

242 ificantly affects biogeochemistry throughout weathering profiles, the lower boundaries of most terres

243 horus and other elements by organic acids in weathering profiles.

244 Weathering proxies indicate that floristic changes occur

245 ne anoxia was induced by a greenhouse-driven weathering pulse, and is compatible with the OAE duratio

246 The lack of soil production and weathering rate measurements in Earth's most rapidly upl

247 new mining, as well as uncertainties in soil weathering rates and land-ocean transfer of weathered pr

248 Here we present chemical weathering rates determined for Mars.

249 Chemical weathering rates estimated by the GEOCARBSULFvolc model

250 Thirdly, the measurements-based weathering rates from subsurface shale are high, amounti

251 erspective for predicting long-term silicate weathering rates in actual geochemical systems and devel

252 s has made it difficult to determine whether weathering rates increase or decline in response to rapi

253 and numerical modelling results suggest that weathering rates may have increased by 215% and potentia

254 The chemical weathering rates thus derived are approximately 1 to 4 o

255 ort-term influences on chemical and physical weathering rates, especially, in ENSO-influenced regions

256 velop more complete understanding and obtain weathering rates.

257 lution, which has important implications for weathering reactions in situ.

258 degrees N) as a model system, we found that weathering reactions in the glacial rivers actively cons

259 cy can be resolved by the earliest oxidative-weathering reactions occurring in benthic and soil envir

260 c CO2 over the past 50 million years.Reverse weathering reactions on or in the seafloor are a major s

261 diments available for carbonate and silicate weathering reactions that can consume atmospheric CO(2)

262 nd tectonics influence the rates of chemical weathering reactions, which can consume atmospheric CO2

263 issolved inorganic carbon (DIC) generated by weathering reactions.

264 s due to the overwhelming influence of these weathering reactions.

265 mmunities and their contributions to mineral weathering remain poorly resolved.

266 Iron supplied by glacial weathering results in pronounced hotspots of biological

267 e near the water table within the chemically weathering saprolite, whereas less-reactive, primary Mn-

268 Moreover, an increase in weathering scaled to the proposed erosional increase wou

269 We detected locations of biomechanical weathering, secondary mineral precipitation, biofilm for

270 simonious carbon cycle model that tracks two weathering-sensitive isotopic tracers (stable (7)Li/(6)L

271 phere, which left a characteristic oxidative weathering signal.

272 s represent previously unrecognized advanced weathering stages that are important in the ultimate tra

273 Although bedrock weathering strongly influences water quality and global

274 n paleosols and patterns of Precambrian rock weathering suggest colonization of continents by subaeri

275 ed congener patterns consistent with Aroclor weathering, suggesting potential PCB metabolism in these

276 by N-fixing alder requires a 64% increase in weathering supply of nutrients over nonfixing trees.

277 t and erosion that are thought to rejuvenate weathering supply of soil minerals.

278 early amplified the orbitally paced chemical weathering that drove BSi burial during the early Mesozo

279 time sequence, suggest enhanced continental weathering that may be attributed to the invasion of bar

280 nsition from abiotic to biotic signatures of weathering, the latter associated with smaller aqueous l

281 In weathering these financial threats, research at the Univ

282 iations in the sizes of sediment produced by weathering, this analysis enables new understanding of s

283 an also accelerate nutrient inputs from rock weathering, thus increasing supplies of multiple nutrien

284 Deep roots enhance bedrock weathering, thus regulating the long-term carbon cycle.

285 pecific oxalate exudation in ectomycorrhizal weathering to dissolve calcium bearing minerals, thus co

286 explicitly captures the kinetics of seafloor weathering to investigate carbon fluxes and the evolutio

287 and promoted methane emissions and oxidative weathering under ostensibly anoxic Precambrian atmospher

288 ecause similar processes control both (e.g., weathering, volcanism, and carbonate precipitation).

289 The main mechanism behind incipient REE weathering was carbonation enhanced by biotic respiratio

290 ncentration, types, polymer composition, and weathering were found among four compartments.

291 Soil-plant cycling and parent material weathering were identified as the most important process

292 ived from atmospheric deposition vs. bedrock weathering, which has fundamental consequences for ecosy

293 treambeds varies with the degree of chemical weathering, which increases systematically with local ra

294 ecessary but not sufficient process in space weathering, which occurs on airless bodies throughout th

295 untains and consequent increases in silicate weathering, which removes atmospheric carbon dioxide(3,4

296 an animal fossil preserved in opal formed by weathering with such high-resolution details that even i

297 elp reconcile evidence for pre-GOE oxidative weathering with the history of atmospheric chemistry, an

298 and isotopic signatures of benthic oxidative weathering would have become more globally significant f

299 Weathering yields from catchments in our compilation are

300 oscillations determines the thickness of the weathering zone.