Significance of Precambrian Paleosols

Kimberley, Michael M.

doi:10.1007/978-3-642-76884-2_9

Cited by 2 publications

(2 citation statements)

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“…Acidic exhalative fluids probably dissolved the limestone caverns before metalliferous exhalative fluids filled them with the subsurface equivalent of manganiferous Kerch ironstone. Exhalative dissolution of karst caverns is a more widespread phenomenon than is generally appreciated by North American geologists (Tsykin, 1989;Kimberley, 1992).…”

Section: First Step Backward Into Earth History: Pliocene Oolitic Iromentioning

confidence: 99%

“…The associated paleosol is controversial (Retallack, 1986) and may reveal that some Precambrian paleosols record an enhancement of surficial weathering by the exhalative supply of reactants and nutrients onto extensive areas of the Earths surface. The prime evidence for an exhalative influence on several Precambrian paleosols is the association of these paleosols with stratiform phosphatic uranium mineralization (Kimberley, 1992).…”

Section: So Lu B I Llty D Epe N D E Nce 0 N Te M Pe Ratu Re Salinitymentioning

confidence: 99%

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Debate about ironstone: has solute supply been surficial weathering, hydrothermal convection, or exhalation of deep fluids?

Kimberley

1994

Terra Nova

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Ironstone is any chemical sedimentary rock with >15% Fe. An iron formation is a stratigraphic unit which is composed largely of ironstone. The solutes which have precipitated to become ironstone have dissolved from the Earth's surface, from the upper crust, e.g. the basaltic layer of oceanic crust, or from deeper within the Earth. Genetic modellers generally choose between surficial weathering, e.g. soil formation, and hydrothermal fluids which have convected through the upper kilometre of oceanic crust. Most genetic modellers attribute 2703-2712. Mnnuscript

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Section: First Step Backward Into Earth History: Pliocene Oolitic Iromentioning

confidence: 99%

Section: So Lu B I Llty D Epe N D E Nce 0 N Te M Pe Ratu Re Salinitymentioning

confidence: 99%