Dolomite pipes in the Crato Formation fossil lagerstätte (Lower Cretaceous, Aptian), of northeastern Brazil

David Martill; Bob Loveridge; U. Heimhofer

doi:10.1016/j.cretres.2007.04.007

Dolomite pipes in the Crato Formation fossil lagerstätte (Lower Cretaceous, Aptian), of northeastern Brazil

David Martill, Bob Loveridge, U. Heimhofer

Research output: Contribution to journal › Article › peer-review

Abstract

Pipe-like structures filled with massive and brecciated Fe-rich dolomites occur within a 5–6 m sequence of otherwise horizontal, millimetre-laminated limestones of the Nova Olinda Member of the Crato Formation (Aptian, Lower Cretaceous) of north east Brazil. The pipe-fills predate compaction, contain hydro-brecciated host strata, developed penecontemporaneously with a carbonate laminite, and may represent methane seeps. Such seeps may have developed above buried topographic highs as fluids emanating from deeper strata migrated along buried discontinuities such as the basement/Cretaceous unconformity and buried faults in the basement.

Original language	English
Pages (from-to)	78-86
Number of pages	9
Journal	Cretaceous Research
Volume	29
Issue number	1
DOIs	https://doi.org/10.1016/j.cretres.2007.04.007
Publication status	Published - Feb 2008

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title = "Dolomite pipes in the Crato Formation fossil lagerst{\"a}tte (Lower Cretaceous, Aptian), of northeastern Brazil",

abstract = "Pipe-like structures filled with massive and brecciated Fe-rich dolomites occur within a 5–6 m sequence of otherwise horizontal, millimetre-laminated limestones of the Nova Olinda Member of the Crato Formation (Aptian, Lower Cretaceous) of north east Brazil. The pipe-fills predate compaction, contain hydro-brecciated host strata, developed penecontemporaneously with a carbonate laminite, and may represent methane seeps. Such seeps may have developed above buried topographic highs as fluids emanating from deeper strata migrated along buried discontinuities such as the basement/Cretaceous unconformity and buried faults in the basement.",

author = "David Martill and Bob Loveridge and U. Heimhofer",

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AU - Heimhofer, U.

PY - 2008/2

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AB - Pipe-like structures filled with massive and brecciated Fe-rich dolomites occur within a 5–6 m sequence of otherwise horizontal, millimetre-laminated limestones of the Nova Olinda Member of the Crato Formation (Aptian, Lower Cretaceous) of north east Brazil. The pipe-fills predate compaction, contain hydro-brecciated host strata, developed penecontemporaneously with a carbonate laminite, and may represent methane seeps. Such seeps may have developed above buried topographic highs as fluids emanating from deeper strata migrated along buried discontinuities such as the basement/Cretaceous unconformity and buried faults in the basement.

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DO - 10.1016/j.cretres.2007.04.007

M3 - Article

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JO - Cretaceous Research

JF - Cretaceous Research

IS - 1

ER -

Dolomite pipes in the Crato Formation fossil lagerstätte (Lower Cretaceous, Aptian), of northeastern Brazil

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