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The distribution of strontium in limestones on Barbuda, West Indies
Author(s) -
WIGLEY PETER
Publication year - 1973
Publication title -
sedimentology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.494
H-Index - 108
eISSN - 1365-3091
pISSN - 0037-0746
DOI - 10.1111/j.1365-3091.1973.tb02051.x
Subject(s) - aragonite , calcite , geology , diagenesis , strontium , west indies , mineralogy , carbonate , geochemistry , oceanography , chemistry , ethnology , organic chemistry , history
The Sr 2+ content of Barbudan limestones is proportional to the aragonite content. The Sr 2+ content of calcite which has replaced aragonite varies from 3000 p.p.m. in the youngest limestones to 50 p.p.m., average values are approximately 300 p.p.m. The (mSr 2+ /mCa 2+ ) L ratios from well waters within the limestone fall within the predicted values assuming K Sr C ∼0·1. The high (mSr 2+ /mCa) 2+ L ratios expected by a lower value of K Sr C do not occur. The build up of (mSr 2+ /mCa 2+ ) L ratios seen in waters from Barbados is not seen in the well waters from Barbuda. The Sr 2+ content of calcite is generally lower than is seen in Barbados, but similar to that seen in parts of the Miami Oolite. Diagenesis of aragonite in Barbudan limestones is probably occurring in a more open system than in Barbados.