|
|
|
|
|
Michael A. Pointon, Helen Smyth, Jenny E. Omma, Andrew C. Morton, Simon Schneider, Peter Hülse, Stephen J. Rippington, Berta Lopez-Mir, Quentin G. Crowley, Ian Millar, Martin J. Whitehouse, Dirk Frei, Robert A. Scott and Michael J. Flowerdew
A multi-proxy provenance study of Late Carboniferous to Middle Jurassic sandstones from the eastern Sverdrup Basin was undertaken employing optical petrography and heavy mineral analysis, chemical analysis of apatite, garnet and rutile grains, as well as...
ver más
|
|
|
|
|
|
|
|
|
|
|
Juan A. Dahlquist,Matías M. Morales Cámera,Juan A. Moreno,Miguel A.S. Basei,Priscila Zandomeni,Gilmara Santos da Cruz
Pág. 167 - 180
Previous geochronological data indicate a protracted Devonian magmatic activity developed in the Sierra de San Luis, Sierras Pampeanas of Argentina, with three major crystallization events: 393±3, 384±2, and 377±2 Ma. Previously reported whole-rock Sm-Nd...
ver más
|
|
|
|
|
|
|
|
|
|
|
Tianxiao Ji and Zhigang Zeng
Mid-ocean ridge basalts (MORBs), produced at mid-ocean ridge where the continents and subduction zones are distant, are the product of partial melting of the upper mantle and their chemical composition can provide information about the mantle itself. The...
ver más
|
|
|
|
|
|
|
|
|
|
|
Damaris Montano, Marta Gasparrini, Sébastien Rohais and Ramon De Luca
The Yacoraite Fm. (Salta rift basin, Argentina) consists of a mixed carbonate?siliciclastic lacustrine succession, interbedded with volcanic ash layers and organised in four third-order stratigraphic sequences. It is one of the few sites in South America...
ver más
|
|
|
|
|
|
|
|
|
|
|
Andrés Rodríguez-Seijo, Knut Endre Sjåstad and Vladislav Chrastný
Lead isotopes have been widely used to assess the sources of Pb in the soil environment since lead isotopes ratios have a specific signature that allows us to use them as environmental tracers. However, some lead sources are difficult to be identified. T...
ver más
|
|
|
|
|
|
|
|
|
|
|
Trevor J. Falloon, Kaj Hoernle, Bruce F. Schaefer, Ilya N. Bindeman, Stanley R. Hart, Dieter Garbe-Schonberg and Robert A. Duncan
Lava samples from the Christmas Island Seamount Province (CHRISP) record an extreme range in enriched mantle (EM) type Sr-Nd-Pb-Hf isotope signatures. Here we report osmium isotope data obtained on four samples from the youngest, Pliocene petit-spot phas...
ver más
|
|
|
|
|
|
|
|
|
|
|
S. Manikandan, S. Chidambaram, M. V. Prasanna and Rakesh Roshan Ganayat
The area chosen for study, Krishnagiri district, has a hard rock terrain and the aquifers located there are sparsely recharged by limited rainfall. The study area has a complex geology with hard rock aquifers. To have an overall view of the trace metals ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Xue Fang, Zhigang Zeng, Siyi Hu, Xiaohui Li, Zuxing Chen, Shuai Chen and Bowen Zhu
Frequent volcanic activity has occurred in the Okinawa Trough (OT) during the late Quaternary, which attracted much attention to the origin of volcanic rocks. Pumice collected from the seafloor has been extensively investigated, whereas few studies paid ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Gabriel A. Arcuri and Alan P. Dickin
New whole-rock lead (Pb) isotope analyses are presented in this study for granitoid orthogneisses from the Southwest Grenville Province in Ontario and Western Quebec. These data are used to test the location of a cryptic Archean-Proterozoic suture propos...
ver más
|
|
|
|
|
|
|
|
|
|
|
Christina Stouraiti, Iakovos Pantziris, Charalampos Vasilatos, Christos Kanellopoulos, Panagiotis Mitropoulos, Panagiotis Pomonis, Robert Moritz and Massimo Chiaradia
The ophiolitic rocks of the Attic-Cycladic crystalline belt are considered of key importance for understanding the Mesozoic tectonic evolution of the Aegean region. Unresolved questions concern their tectono-stratigraphic relationships across the region....
ver más
|
|
|
|
|
|