ライフサイエンスコーパス: sulfur isotope

1 f their textures, chemical compositions, and sulfur isotopes.

2 voked to avoid spectral interferences on the sulfur isotopes.

3 nd secondary ion mass spectrometry (SIMS) of sulfur isotopes ((32)S, (33)S, and (34)S), we examined d

4 otope record that includes the less abundant sulfur isotope 33S.

5 llular levels, tracking the fate of a stable sulfur isotope ((34)S) from its incorporation by microal

6 bacteria labeled metabolically with a stable sulfur isotope (34SO 4 2-).

7 We used stable carbon, nitrogen, and sulfur isotope analyses of archaeological bones and hist

8 of sulfur in these melts, we combine in situ sulfur isotope analyses with regression modeling.

9 with the use of an additional isotopic tool-sulfur isotope analysis (delta(34)S) of AEOs.

10 and delta18O in SO4, with the possibility of sulfur isotope analysis on the same sample.

11 Using multiple sulfur isotope and iron-sulfur-carbon systematics, we de

12 Sulfur isotope anomalies and marked decreases in ice cor

13 The sulfur isotope anomalies are confined to beds containing

14 luorinating agent is needed, both oxygen and sulfur isotopes can be measured on the same sample, only

15 The Mount McRae record of sulfur isotopes captures the widespread and possibly per

16 reveal differences in pyrite grain size and sulfur isotope composition between fossils and concretio

17 carbon) values but variable delta(34)S(CAS) (sulfur isotope composition of carbonate-associated sulfa

18 Sulfur isotope composition of DMS analyzed in freshly co

19 (CF-IRMS) for the rapid determination of the sulfur isotope composition of sulfide and sulfate minera

20 atic events that fractionated the primordial sulfur isotope composition of the Moon: the segregation

21 Multiple sulfur isotope compositions (delta(33)S, delta(34)S, and

22 ur cycles rely heavily on sedimentary pyrite sulfur isotope compositions (delta(34)S(pyr)).

23 We show that the sulfur isotope compositions (delta(34)S) of DMSP are dep

24 The range of mass-independent sulfur isotope compositions may reflect spatial or tempo

25 we report measurements of the abundance and sulfur isotope compositions of DMSP from one phytoplankt

26 and scanning electron microscopy, we examine sulfur isotope compositions, pyrite morphology and grain

27 A continuous seawater sulfate sulfur isotope curve for the Cenozoic with a resolution

28 Sulfur isotope data compiled from the same stratigraphic

29 Taking into account evidence from sulfur isotope data for Archean to early Proterozoic sur

30 We present bulk, microdrilled, and ion probe sulfur isotope data from carbonate-associated pyrite in

31 Here, we present multiple sulfur isotope data implying that the sulfur in Archean

32 Both signatures disappear when the sulfur isotope data indicate a brief return to an anoxic

33 ystem sulfate reduction, as indicated by new sulfur isotope data.

34 present coupled high-resolution carbon- and sulfur-isotope data from four European OAE 2 sections sp

35 The anomalous sulfur isotope (Delta(33)S) signature of pyrite (FeS2) i

36 0 degrees C possess anomalously fractionated sulfur isotopes: Delta33S = +0.1 to +2.1 per mil and Del

37 The magnitude of the sulfur isotope effect is similar in red blood cells and

38 Here we determine the sulfur isotope effect of the enzyme adenosine phosphosul

39 Sulfur isotope effects were larger in enzymatic (epsilon

40 Sulfur isotope evidence from sedimentary pyrites reveals

41 Synchronous with sulfur isotope evidence of atmospheric oxygenation in th

42 tope labeling is an underexplored field, and sulfur isotope exchange has been overlooked.

43 ond activation strategy to achieve selective sulfur isotope exchange.

44 ing of organic-carbon and pyrite burial, the sulfur-isotope excursion can be generated by transiently

45 oxygen-free photochemistry, mass-independent sulfur isotope fractionation (S-MIF) is widely accepted

46 other sedimentary environments (for example, sulfur isotope fractionation above 60 per thousand in su

47 We present a quantitative model for sulfur isotope fractionation accompanying bacterial and

48 apparent asymmetry in the magnitude of minor sulfur isotope fractionation in Archean sediments remain

49 Therefore, similar magnitudes of sulfur isotope fractionation in sedimentary rocks do not

50 Although sulfur isotope fractionation is a phenotypic trait that

51 The minor extent of sulfur isotope fractionation preserved in many Neoarchea

52 By contrast, the microbial sulfur isotope fractionation remains large and relativel

53 Sulfur isotope fractionation resulting from microbial su

54 ronmental sulfate and sulfide levels control sulfur isotope fractionation through the proximate influ

55 that incorporates O(2)-dependent carbon and sulfur isotope fractionation using data obtained from la

56 veal significant degrees of mass-independent sulfur isotope fractionation.

57 e Archean ocean, we find large (>20 per mil) sulfur isotope fractionations between sulfate and sulfid

58 te the translation of modern measurements of sulfur isotope fractionations into estimates of Archean

59 find a strong relationship between observed sulfur isotope fractionations over the last 200 Ma and t

60 Mass-independent sulfur isotope fractionations were observed along with h

61 craton, Botswana, preserve mass-independent sulfur isotope fractionations.

62 -20 cm from the orifice, indicated by stable sulfur isotopes; however, we also demonstrate that nanop

63 Sulfur isotopes in ancient sediments provide a record of

64 r observations of Io's atmosphere to measure sulfur isotopes in gaseous sulfur dioxide and sulfur mon

65 Anomalously fractionated sulfur isotopes in many sedimentary rocks older than 2.4

66 The composition of sulfur isotopes in sedimentary sulfides and sulfates tra

67 ic compositions of three major constituents: sulfur isotopes in sulfate (delta(34)SSO4), carbon isoto

68 lyzed sulfur and iron speciation, along with sulfur isotopes, in plagioclase-hosted melt inclusions a

69 d provides access to previously inaccessible sulfur isotope-labeled substrates for sulfur kinetic iso

70 ulfur in many biologically active molecules, sulfur isotope labeling is an underexplored field, and s

71 Here we present a carbon and sulfur isotope mass balance model for the latest Cambria

72 hold represents an estimated upper limit for sulfur isotope mass-independent fractionation (S-MIF), a

73 uld be inconsistent with post-GOE absence of sulfur isotope mass-independent fractionation.

74 Sulfur isotope measurements ((34)S/(32)S; d(34)S) have b

75 In situ sulfur isotope measurements from individual microfossils

76 these rocks, we performed microscale in situ sulfur isotope measurements of the preserved organic sul

77 Sulfur isotope measurements offer comprehensive informat

78 Here we present sulfur isotopes measurements of marine and atmospheric C

79 We report the production of large sulfur isotope MIF, with Delta(33)S up to 78 per thousan

80 ect (CME)-potentially decouples the multiple sulfur isotope (MSI) record from coeval atmospheric chem

81 Here, we present a study of the four sulfur isotopes obtained using secondary ion MS that see

82 ar relative change between the oxygen versus sulfur isotopes of sulfate in all experiments (with and

83 and its associated (and analytically useful) sulfur isotope peaks.

84 e a simple, sensitive, and robust method for sulfur isotope ratio ((34)S/(32)S) analysis of ppm-level

85 essfully calibrated the setup for carbon and sulfur isotope ratio analysis.

86 f oceanic DMS to aerosols we established the sulfur isotope ratios ((34)S/(32)S ratio, delta(34)S) of

87 ox budgets, and leaving an imprint in pyrite sulfur isotope ratios (d(34)S(pyr)).

88 we report the first in situ measurements of sulfur isotope ratios dissolved in primitive volcanic gl

89 degradation of dibenzothiophenes, and stable sulfur isotope ratios for elemental sulfur and sulfate i

90 Here we present stable carbon, nitrogen and sulfur isotope ratios of collagen extracted from Rangife

91 Intramolecular carbon, hydrogen, and sulfur isotope ratios were measured on a homologous seri

92 ect recorded in biomarkers (e.g., carbon and sulfur isotope ratios) have allowed scientists to sugges

93 However, it is clear from the sulfur isotope record and other geochemical proxies that

94 our model, with the two largest steps in the sulfur isotope record coinciding with the emplacement of

95 We find that the sulfur isotope record in worldwide diamond inclusions is

96 If so, the sulfur isotope record of sedimentary rocks may be linked

97 It is puzzling, therefore, that the sulfur isotope record of the Neoarchean is characterized

98 the pathway and reinterpret the sedimentary sulfur isotope record over geological time.

99 a number of features seen in the Neoarchean sulfur isotope record.

100 redox-controlled (Fe-speciation) carbon- and sulfur-isotope record reveals sustained systematic strat

101 rlooked depositional controls on sedimentary sulfur isotope records, especially associated with inter

102 Mass-independent fractionation of sulfur isotopes (reported as Delta(33)S) recorded in Arc

103 Mass-independent fractionation of sulfur isotopes (S MIF) in Archean and Paleoproterozoic

104 Mass-independent fractionation of sulfur isotopes (S-MIF) results from photochemical react

105 nts with only three free parameters: (i) the sulfur isotope selectivity of sulfate uptake into the cy

106 The correlation of the time-series sulfur isotope signals in northwestern Australia with eq

107 ile the comparison of simulated and measured sulfur isotope signatures acted as additional calibratio

108 hermal solutions may have produced anomalous sulfur isotope signatures in some sedimentary rocks.

109 splay the characteristic oxygen fugacity and sulfur isotope signatures of arc magmas worldwide.

110 e striking mass-independent fractionation of sulfur isotopes that took place in the Archean atmospher

111 s with mass-independently fractionated (MIF) sulfur isotopes that trace Archean surficial signatures

112 processes should be considered in the use of sulfur isotopes to study the onset and consequences of m

113 magnitude of fractionations of the multiple sulfur isotopes to the rate of microbial sulfate reducti

114 mental data contrasts strongly with multiple sulfur isotope trends in Archean samples, which exhibit

115 The results show good precision and reveal sulfur isotope variability between individual OSCs that

116 Sulfur isotope variations in mantle-derived lavas provid

117 gnitude for carbon isotopes precedes that of sulfur isotopes with an estimated offset of a few hundre