Magnesium isotopes in high-temperature saddle dolomite cements in the lower Paleozoic of Canada
Sedimentary Geology(2014)
摘要
Mg isotopes are used to better understand the genesis of hydrothermal saddle dolomite cements in Lower Paleozoic successions in Canada. These cements occur in fault-bounded dolostones that overlay lithologically diverse basement rocks; Ordovician dolomite lies over the Precambrian craton, whereas the Silurian and Devonian dolomites overlay a succession of tectonically accreted sedimentary, volcanic and ultramafic units of Cambrian to Ordovician age.
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关键词
Mg isotopes,Hydrothermal dolomites,Paleozoic,Canada
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