Relationship of Organic Geochemistry to Sedimentation under Highly Variable Environments, Lorca Basin, Spain: Preliminary Results
Published:January 01, 1994
Said Benalioulhaj, B. Charlotte Schreiber, R. Paul Philp, 1994. "Relationship of Organic Geochemistry to Sedimentation under Highly Variable Environments, Lorca Basin, Spain: Preliminary Results", Sedimentology and Geochemistry of Modern and Ancient Saline Lakes Models, Robin W. Renaut, William M. Last
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Detailed analysis of a sedimentary sequence of the Lorca basin (Upper Miocene, southeast Spain), employing stratigraphy, sedimentary petrology, paleontology and organic geochemistry, permitted the establishment of sediment-biomarker relationships of deposits formed under highly variable conditions. The conditions of sedimentation in this sequence range from open marine to strongly hypersaline (both marine and non-marine), as well as a number of marked variations in circulation, water-body chemistry and salinity. Most of the sectíon formed under marine conditions, but the upper part of the sequence is the product of increasingly non-marine waters, suggesting that the basin sporadically may have become a non-marine, hypersaline lake. Sedimentologically, many details of water circulation and the increasing amount of non-marine input are not particularly apparent, but the distribution of n-alkanes and isoprenoids permit these changes to be evaluated in a more convincing fashion.
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Sedimentology and Geochemistry of Modern and Ancient Saline Lakes Models
Sedimentology and Geochemistry of Modern and Ancient Saline Lakes - This volume of papers grew out of a four-day symposium entitled ?Sedimentary and Paleolimnological Records of Saline Lakes? held at Saskatoon, Canada in August, 1991. The aim of this Special Publication is to bring together selected papers from this conference that deal specifically with the sedimentological, inorganic geochemical, and hydrological aspects of salt lakes and their stratigraphic records. This volume is divided into four sections. The first section contains papers that deal with modern saline lakes. The second section contains papers dealing with sedimentation and diagenesis of late Quaternary salt lakes. The third and fourth sections contain papers devoted to ancient (pre-Quaternary) Lacustrine sequences.