ライフサイエンスコーパス: snowball earth

1 eomagnetic studies, possibly resulting in a 'snowball Earth'.

2 he sensitivity of the climate to producing a Snowball Earth.

3 iron formation deposited during the Sturtian snowball Earth.

4 hts into periglacial systems associated with Snowball Earth.

5 gmatic survival of multicellular life during snowball Earth.

6 s ago, several glaciations may have produced Snowball Earths.

7 itude glaciations: the Sturtian and Marinoan snowball Earths.

8 ado occurred before the first Neoproterozoic Snowball Earth and therefore cannot be a product of glac

9 A Paleoproterozoic snowball Earth at 2.4 Giga-annum before present (Ga) imm

10 30 degrees being most conducive to forming a Snowball Earth because of reduced albedo at low latitude

11 Snowball climate, we argue the initiation of Snowball Earth by a large impact is a robust possible me

12 Termination of such 'hard snowball Earth' climate states has been proposed to proc

13 al intervals of intense, global glaciation ("snowball Earth" conditions) during Precambrian time.

14 oterozoic low-latitude glaciation, known as 'snowball Earth', could have been periods of intense dive

15 biotic complexity between the two Cryogenian Snowball Earth episodes (ca. 661 million to <=650 millio

16 r refugia that sheltered complex life during Snowball Earth episodes.

17 eras, geological evidence points to several "Snowball Earth" episodes when most of Earth's surface wa

18 alaeomagnetic latitudes can be explained by 'snowball Earth' episodes, high orbital obliquity or mark

19 shelves during two discrete, self-reversing Snowball Earth epochs spanning a combined 60 to 70 Myr o

20 carbon in close association with a putative snowball Earth event and an earlier pulse of atmospheric

21 The snowball Earth event followed the 'boring billion'-a per

22 static rebound after the terminal Cryogenian snowball Earth event.

23 initiation mechanism of these Neoproterozoic Snowball Earth events has remained a mystery, the broad

24 low-latitude glaciation, which are probable "Snowball Earth" events.

25 rinoan Ice Age (ca. 654-635 Ma), one of the 'Snowball Earth' events in the Cryogenian Period, contine

26 tly, mountains in middle latitudes inhibited Snowball Earth formation, and mountains in low latitudes

27 ion, and mountains in low latitudes promoted Snowball Earth formation, with the supercontinent with m

28 the latitudes of mountains control whether a Snowball Earth forms or not.

29 biogenic evolution, polar paleo climatology, snowball earth geology, and present day atmospheric scie

30 ince aged 2.2-2.4 Ga that operated under the Snowball Earth glaciation conditions.

31 Neoproterozoic oxygen increase and Sturtian Snowball Earth glaciation, which accompanied emplacement

32 The snowball Earth glaciations and Neoproterozoic oxidation

33 The Cryogenian Sturtian and Marinoan Snowball Earth glaciations bracket a nonglacial interval

34 3 to 5 km during Cryogenian (717 to 635 Ma) snowball Earth glaciations or, alternatively, diachronou

35 with at least ~3 to 5 km of unroofing during snowball Earth glaciations, but also demonstrate that pl

36 cological relevance after the Neoproterozoic Snowball Earth glaciations, but the causes for this cons

37 During the Cryogenian (720 to 635 Ma ago) Snowball Earth glaciations, ice extended to sea level ne

38 oic Earth was punctuated by two low-latitude Snowball Earth glaciations.

39 period ( 720-635 Ma) is marked by extensive Snowball Earth glaciations.

40 upercontinent, and after the Neoproterozoic 'snowball' Earth glaciations (0.75 to 0.63 billion years

41 At least two global "Snowball Earth" glaciations occurred during the Neoprote

42 The severe "Snowball Earth" glaciations proposed to have existed dur

43 For the severe low-latitude "snowball Earth" glaciations, glacial deposits occurring

44 n the aftermath of widespread, low-latitude 'snowball Earth' glaciations.

45 ore the approximately 2.3-2.2 Ga Makganyene "snowball Earth" (global glaciation).

46 One of the most significant challenges to snowball Earth has been sedimentological cyclicity that

47 ts and intense silicate weathering in a post-Snowball Earth hothouse.

48 most of the past two billion years, and the snowball Earth hypothesis accordingly remains the most v

49 The Snowball Earth hypothesis predicts global ice cover; how

50 The snowball Earth hypothesis-that a runaway ice-albedo feed

51 nmental disturbance than that implied by the snowball Earth hypothesis.

52 tra-high CO2 concentrations proposed by the "snowball' Earth hypothesis produce a typical MOSD durati

53 ides important constraints for parts of the "Snowball Earth" hypothesis.

54 Our finding is consistent with the 'snowball Earth' hypothesis and/or a massive methane rele

55 ave extended well down into the tropics-the 'snowball Earth' hypothesis-or the present zonation of cl

56 millions of years during such ice ages--the 'snowball Earth' hypothesis.

57 s in Earth history, the end of the Marinoan 'snowball Earth' ice age, approximately 635 Myr ago.

58 In any case, a snowball Earth is a precondition for the observed MOSD e

59 , ice-covered oceans-a salient prediction of snowball Earth-is difficult to establish geologically.

60 na that are expected to be significant in a 'snowball Earth' scenario, but which have not been consid

61 rather narrow escape from a fully glaciated Snowball Earth state given the low levels and large fluc

62 and that trophic complexity survived through snowball Earth times.

63 f climates ranging from a nearly ice-covered Snowball Earth to a nearly ice-free hothouse.

64 tion would have resulted in a warming of the snowball Earth to extreme greenhouse conditions.

65 We propose that the extreme sensitivity of a Snowball Earth to reconstructions of the paleogeography

66 To simulate a snowball Earth, we use only a reduction in the solar con

67 explained by a global glaciation (that is, a snowball Earth), which ended abruptly when subaerial vol