Sur la presence de dolomite dans les 'terres noires' de l'anticlinorium de Laragne (Hautes-Alpes); interpretation paleo-oceanographique
1965 ◽
Vol S7-VII
(5)
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pp. 769-772
Keyword(s):
Low Ph
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Abstract Middle Jurassic (Bathonian) and upper Jurassic (Callovian-lower Argovian) dark-colored shales and marls of Hautes-Alpes, France, locally known as the 'terres noires,' contain abundant microcrystalline dolomite in the lower (Bathonian) part. Mixed detrital sediments and carbonates in the lower part contrast with essentially terrigenous strata in the upper (Callovian-Oxfordian) part. The Bathonian depositional basin was isolated by sills and probably contained magnesium-rich waters of low pH; at the beginning of the upper Jurassic the basin became more open and dolomite formation ceased.
1963 ◽
Vol S7-V
(1)
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pp. 41-46
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Keyword(s):
1998 ◽
pp. 43-54
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2017 ◽
Vol 51
(3)
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pp. 258-263
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2020 ◽
Vol 298
(2)
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pp. 137-146
Keyword(s):
2020 ◽
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1991 ◽
Vol 14
(1)
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pp. 95-102
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