Tillites, diamictites, and ballistic ejecta of large impacts

Research output: Contribution to journalArticle

Abstract

The primary evidence for the temporal and spatial distribution of glaciation prior to the Cenozoic is the occurrence of tillites. These are diamictites and associated deposits, which have features considered diagnostic of glacial action. Fallout of ballistic ejecta from the impact of large asteroids or comets can also create large-scale debris flows with simultaneous rainout of debris. Recent calculations of the predicted volume and distribution of impact-generated diamictites suggest that they should be common in the geologic record. The possible confusion between glacial and impact diamictites suggests that a review of the properties of diamictites of various origins is required. Evidence of shock deformation in diamictites is the most important criterion for determining an impact origin. -from Author

Original languageEnglish (US)
Pages (from-to)439-456
Number of pages18
JournalJournal of Geology
Volume102
Issue number4
StatePublished - 1994

Fingerprint

fallout
ejecta
debris flow
temporal distribution
asteroid
comet
glaciation
spatial distribution
rainout
distribution
calculation

ASJC Scopus subject areas

  • Geology

Cite this

Tillites, diamictites, and ballistic ejecta of large impacts. / Rampino, Michael.

In: Journal of Geology, Vol. 102, No. 4, 1994, p. 439-456.

Research output: Contribution to journalArticle

@article{2bc063e1748a473b9652438d2d298d8b,
title = "Tillites, diamictites, and ballistic ejecta of large impacts",
abstract = "The primary evidence for the temporal and spatial distribution of glaciation prior to the Cenozoic is the occurrence of tillites. These are diamictites and associated deposits, which have features considered diagnostic of glacial action. Fallout of ballistic ejecta from the impact of large asteroids or comets can also create large-scale debris flows with simultaneous rainout of debris. Recent calculations of the predicted volume and distribution of impact-generated diamictites suggest that they should be common in the geologic record. The possible confusion between glacial and impact diamictites suggests that a review of the properties of diamictites of various origins is required. Evidence of shock deformation in diamictites is the most important criterion for determining an impact origin. -from Author",
author = "Michael Rampino",
year = "1994",
language = "English (US)",
volume = "102",
pages = "439--456",
journal = "Journal of Geology",
issn = "0022-1376",
publisher = "University of Chicago",
number = "4",

}

TY - JOUR

T1 - Tillites, diamictites, and ballistic ejecta of large impacts

AU - Rampino, Michael

PY - 1994

Y1 - 1994

N2 - The primary evidence for the temporal and spatial distribution of glaciation prior to the Cenozoic is the occurrence of tillites. These are diamictites and associated deposits, which have features considered diagnostic of glacial action. Fallout of ballistic ejecta from the impact of large asteroids or comets can also create large-scale debris flows with simultaneous rainout of debris. Recent calculations of the predicted volume and distribution of impact-generated diamictites suggest that they should be common in the geologic record. The possible confusion between glacial and impact diamictites suggests that a review of the properties of diamictites of various origins is required. Evidence of shock deformation in diamictites is the most important criterion for determining an impact origin. -from Author

AB - The primary evidence for the temporal and spatial distribution of glaciation prior to the Cenozoic is the occurrence of tillites. These are diamictites and associated deposits, which have features considered diagnostic of glacial action. Fallout of ballistic ejecta from the impact of large asteroids or comets can also create large-scale debris flows with simultaneous rainout of debris. Recent calculations of the predicted volume and distribution of impact-generated diamictites suggest that they should be common in the geologic record. The possible confusion between glacial and impact diamictites suggests that a review of the properties of diamictites of various origins is required. Evidence of shock deformation in diamictites is the most important criterion for determining an impact origin. -from Author

UR - http://www.scopus.com/inward/record.url?scp=0028562261&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0028562261&partnerID=8YFLogxK

M3 - Article

VL - 102

SP - 439

EP - 456

JO - Journal of Geology

JF - Journal of Geology

SN - 0022-1376

IS - 4

ER -