Title : ( Late Devonian facies variety in Iran: volcanism as a possible trigger of the environmental perturbation )
Authors: Mohamad Hosein Mahmudy Gharaie , Ryo Matsumoto , Yoshitaka Kakuwa , Paul G. Milroy ,
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Abstract
Upper Devonian successions surrounding the Frasnian-Famennian (F-F) boundary in Iran consist of mixed carbonate/silisiclastic deposits. The successions are characterized by conspicuous ferruginous limestones, clay-rich units, black shales, and mafic volcanic rocks that provide important insights into palaeoenvironmental conditions during this interval of Earth’s history. An increase of kaolinite/illite ratio in clays associated with the F-F boundary suggests that increased chemical weathering was facilitated by warm and humid climatic conditions.
Keywords
, Frasnian-Famennian boundary, Iran, black shale, ironstone, greenhouse, volcanism
@article{paperid:1019810,
author = {Mahmudy Gharaie, Mohamad Hosein and Ryo Matsumoto and Yoshitaka Kakuwa and Paul G. Milroy},
title = {Late Devonian facies variety in Iran: volcanism as a possible trigger of the environmental perturbation},
journal = {Geological quarterely},
year = {2004},
volume = {48},
number = {4},
month = {November},
issn = {1641-7291},
pages = {323--332},
numpages = {9},
keywords = {Frasnian-Famennian boundary; Iran; black shale; ironstone; greenhouse; volcanism},
}
%0 Journal Article
%T Late Devonian facies variety in Iran: volcanism as a possible trigger of the environmental perturbation
%A Mahmudy Gharaie, Mohamad Hosein
%A Ryo Matsumoto
%A Yoshitaka Kakuwa
%A Paul G. Milroy
%J Geological quarterely
%@ 1641-7291
%D 2004
