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Oldest buckthorn fossilized flowers found in Argentina
Oldest buckthorn fossilized flowers Argentina
2017/7/20
Around 66 million years ago, at the end of the Cretaceous period, a giant asteroid crashed into the present-day Gulf of Mexico, leading to the extinction of the non-avian dinosaurs. How plants were af...
Petrology and geochemistry of the back-arc lithospheric mantle beneath eastern Payunia (La Pampa, Argentina): Evidence from Agua Poca peridotite xenoliths
gmantle xenoliths fractional melting mantle metasomatism depleted mantle reservoir Argentinatagonia
2017/4/11
This paper presents the results of new petrochemical studies carried out on mantle xenoliths hosted in Pleistocene
basaltic rocks from the Agua Poca volcano in central-western Argentina. Mantle xenol...
Trace fossils from the Lower-Middle Jurassic Bardas Blancas Formation,Neuquen Basin,Mendoza Province,Argentina
Trace fossils ichnotaxonomy ichnofacies Neuquén Basin Jurassic
2009/10/20
Bressan, G.S. and Palma, r.M. 2009. Trace fossils from the Lower–Middle Jurassic Bardas Blancas Formation,Neuquén Basin, Mendoza Province, Argentina. Acta Geologica Polonica, 59 (2), 201–220. Warszawa...
Fibrous-clay mineral formation and soil evolution in Aridisols of northeastern Patagonia, Argentina
Palygorskite Sepiolite Fluorite Soil genesis Calcic and petrocalcic horizons Chubut province of Argentina
2011/11/11
Recent studies of soil–landscape relationships in northeastern Patagonia identified fibrous-clay minerals in calcic and petrocalcic horizons
developed on old fluvio-glacial plains called “Rodados Pat...
Iron-Oxide Mineralogy of a Mollisol from Argentina: A Study by Selective-Dissolution Techniques, X-Ray Diffraction, and Mossbauer Spectroscopy
Ammonium-Oxalate Dissolution Treatment Chemical Analysis Dithionite-Citrate-Bicarbonate Dissolution Treatment Dithionite-Ethylenediaminetetraacetic Acid Dissolution Treatment
2011/12/6
Abstract: Selective-dissolution techniques by ammonium oxalate (OX), dithionite-citrate-bicarbonate (DCB), and dithionite-ethylenediaminetetraacetic acid (D-EDTA), and X-ray diffraction and M鰏sbauer s...
Bederite, a new pegmatite phosphate mineral from Nevados de Palermo, Argentina: Description and crystal structure
Bederite new pegmatite phosphate mineral Nevados de Palermo Argentina Description crystal structure
2012/4/1
Bederite, ideally Ca Mn Fe Mn (PO ) (H O) , orthorhombic, a = 12.559(2), b = 12.834(1), c= 11.714(2) ?, V = 1887.8(4) ?
, Z = 4, space group Pcab, is a new mineral from the El Pe?(R)AE
pegmatite, Ne...
Clay Deposits of Las Aguilas Formation, Barker, Buenos Aires Province, Argentina
Argentina Kaolinite Lateritic alteration Refractories Reserves
2012/2/10
Mineralogical, chemical, and geological aspects of four types of clay deposits in Las Aguilas Formation northwest of Barker in Buenos Aires Province, Argentina, indicate that these products of laterit...
A Chloritized Montmorillonite from the Rio Chiflon Formation (TR) of Argentina
Montmorillonite TR Argentina Rio Chiflon Formation
2012/2/17
X-ray, chemical, and genetic characteristics of a chloritized montmorillonite mineral species, found in The Río Chiflón Formation (La Torre, La Rioja, Argentina) are described. The mineral is associat...