Results 41 to 50 of about 6,060 (205)

Neoproterozoic ultramafic and mafic magmatism in the Eastern Cordillera of the central peruvian Andes: the Tapo Massif [PDF]

, 2010
A highly dismembered assemblage of ultramafic and mafic rocks is exposed in the Eastern Cordillera of the Central Peruvian Andes, extending along a discontinuous NW-SE belt over some 250 km between 12° and 9° S of latitude.
Acosta, Jorge, Castroviejo Bolibar, Ricardo, Acosta Ale, Jorge Gilberto, Tassinari, Colombo G., Pereira, Eurico, Tassinari, Colombo Celso Gaeta, Rodrigues, José Feliciano, Rodrigues, Jose F.   +7 more
core  

(Table 4) Ultimate and failure strengths of serpentinite muds from ODP Hole 125-779A

, 1992
(Table 4) Ultimate and failure strengths of serpentinite muds from ODP Hole 125 ...
Ballotti, Dean M, Stephen Paul Phipps (7971794), Dean M Ballotti (7971797), Phipps, Stephen Paul   +3 more
core   +1 more source

Mortars From Punic and Hellenistic–Roman Solunto: Materials, Formulations, and Technology

Archaeometry, EarlyView.
ABSTRACT This study presents an archaeometric investigation of 18 hydraulic rendering and bedding mortars from Punic and Hellenistic–Roman Solunto (NW Sicily). The research aimed to characterize raw materials, reconstruct manufacturing sequences, and evaluate technological proficiency through mineralogical and petrochemical analyses.
G. Montana, G. Polizzi, C. Portale, M. Gasparo Morticelli, L. Randazzo   +4 more
wiley   +1 more source

(Table 1) Ultimate and failure strengths of serpentinite muds from ODP Hole 125-780D

, 1992
(Table 1) Ultimate and failure strengths of serpentinite muds from ODP Hole 125 ...
Ballotti, Dean M, Stephen Paul Phipps (7971794), Dean M Ballotti (7971797), Phipps, Stephen Paul   +3 more
core   +1 more source

Fluid‐Mediated Mass Transfer Between Mafic and Ultramafic Rocks in Subduction Zones

Geochemistry, Geophysics, Geosystems, 2022
Metasomatic reaction zones between mafic and ultramafic rocks exhumed from subduction zones provide a window into mass‐transfer processes at high pressure.
E. A. Codillo, F. Klein, B. Dragovic, H. R. Marschall, E. Baxter, M. Scambelluri, E. Schwarzenbach‬   +6 more
doaj   +1 more source

Neural Networks and Multivariate Analysis Based on Geochemical Data to Determine Stone Provenance From Ancient Calabrian Quarries (Southern Italy)

Archaeometry, EarlyView.
ABSTRACT This study shows an innovative approach to determine the origin of some Calabrian rocks quarried used in ancient times. Twenty‐five quarries, distributed in all the Calabrian provinces (Southern Italy), were studied and sampled. Ten samples were taken from each quarry, for a total of 250 samples.
Domenico Miriello, Stefano Columbu, Raffaella De Luca, Marco Lezzerini, Mirco Taranto, Fabrizio Antonelli   +5 more
wiley   +1 more source

Serpentinite-hosted talc-magnesite deposits of Wadi Barramiya area, Eastern Desert, Egypt: Characteristics, petrogenesis and evolution

, 2012
Enormous quantities of practically untapped talc–magnesite rocks are distributed in the Wadi Barramiya area in intimate spatial and genetic association with the ophiolitic serpentinites. These deposits are an important potential source of magnesia, which
El Kalioubi, B., Z. Taman, Abdel Wahab, W., B. El Kalioubi, Taman, Z., W. Abdel Wahab, M.W. Ali-Bik, Abdel Wahab, Wael, Ali-Bik, M. W., Ali-Bik, Mohamed W, El Kalioubi, Baher, Taman, Zeinab   +11 more
core   +1 more source

Serpentinites and serpentinites: Variety of origins and emplacement mechanisms of serpentinite bodies in the California Cordillera

Island Arc, 2017
AbstractMost serpentinitized peridotite in orogenic belts is derived from oceanic lithosphere, but the emplacement mechanisms of these rocks vary greatly, as illustrated by the nature of these rock bodies and their contacts. The diverse emplacement mechanisms have important implications for connecting ophiolitic rock occurrences to large‐scale orogenic
openaire   +2 more sources

Talc‐Tempered Pottery From Bala Hissar, Kabul: An Analytical Study

Archaeometry, EarlyView.
ABSTRACT Potsherds of cooking ware excavated at Bala Hissar archaeological site in Kabul were studied using X‐ray fluorescence (XRF), scanning electron microscope‐energy dispersive X‐ray spectrometry (SEM‐EDS), Raman spectroscopy, X‐ray powder diffraction (XRPD), thermogravimetric analysis (TGA) and optical microscopy.
Parviz Holakooei, Babak Rafiei‐Alavi, Hafizullah Hazim, Hasti Pezeshkanjalili, Lara Maritan   +4 more
wiley   +1 more source

Scientists’ warning on the global destruction of rock outcrop ecosystems

Conservation Biology, EarlyView.
Abstract Rock outcrops are geological formations that harbor a highly specialized biota adapted to harsh environmental conditions that differ from their surrounding landscapes. They are globally distributed, especially in old, highly weathered landscapes, and can function as habitat islands containing high levels of endemism and distinct evolutionary ...
Luiza F. A. de Paula, Lucas N. Perillo, Gianluigi Ottaviani, Flávio F. Carmo, Mandar N. Datar, Katherine C. Enebeli‐Ekwutoziam, Bruno Fogliani, Stephen D. Hopper, Aboli Kulkarni, Hans Lambers, Rafael F. Magalhães, Frederico S. Neves, Jean‐François Ponge, Stefan Porembski, Bruno H. P. Rosado, Fernando M. G. Santos, Elycée Tindano, Bram Vanschoenwinkel, Aparna Watve, Fernando A. O. Silveira   +19 more
wiley   +1 more source