Laterites and paleoclimates.

Modeling paleoclimates

Data describe, models explain. Both are required to document and understand the past variations of Earth’s climate, and to help address the present problem of assessing climate change that may result from human activities. Models (for the most part conceptual as opposed to numerical) have long been applied for understanding climate variations during the Quaternary. Indeed, over a century ago, i...

Paleoclimates in Southwestern Tasmania during the Last 13,000 Years

Lacustrine sedimentary organic matter records of Late Quaternary paleoclimates

Identification of the sources of organic matter in sedimentary records provides important paleolimnologic information. As the types and abundances of plant life in and around lakes change, the composition and amount of organic matter delivered to lake sediments changes. Despite the extensive early diagenetic losses of organic matter in general and of some of its important biomarker compounds in...

Evaluation of Digital Classification of Polarimetric SAR Data for Iron-Mineralized Laterites Mapping in the Amazon Region

This study evaluates the potential of Cand L-band polarimetric SAR data for the discrimination of iron-mineralized laterites in the Brazilian Amazon region. The study area is the N1 plateau located on the northern border of the Carajás Mineral Province, the most important Brazilian mineral province which has numerous mineral deposits, particularly the world’s largest iron deposits. The plateau ...

enhancement and detection of koopan laterites (zagros, iran), based on landsat satellite data

koopan regional laterites located in north east of shiraz, fars province.the rock strata, koopan laterits set on neyriz ophiolites that these ophiolites are actually part of a series zagros ophiolite with of upper cretaceous age. these laterites are covered with nummulitic limestone equivalent jahrom formation with eocene age. the lateritization should be occurred after the upper cretaceous in ...