Buscar
Mostrando ítems 61-70 de 724
Analysis of the paleomagnetism and rock magnetism of the Surco Intrusion, Peru: an attempt to obtain a Southern Hemisphere reversal record
(ElsevierNL, 1990)
Investigation of the Surco pluton, a granodioritic body approximately 12 km in diameter and age 20 Ma, located near Lima, Peru, was initiated in order to obtain a geomagnetic reversal record. More than 300 samples provide ...
Magnetização remanescente: um parâmetro crucial para a interpretação e modelamento de anomalias magnéticas em território brasileiro
(Sociedade Brasileira de Geofísica, 2009)
A questão da magnetização remanescente na interpretação de anomalias magnéticas é frequentemente negligenciada, principalmente em função da dificuldade em se lidar com a mesma. Na maioria dos casos, tanto nos trabalhos ...
A paleomagnetic and magnetic fabric study of the Illapel Plutonic Complex, Coastal Range, central Chile: Implications for emplacement mechanism and regional tectonic evolution during the mid-Cretaceous
(Elsevier, 2014)
The Illapel Plutonic Complex (IPC), located in the Coastal Range of central Chile (31 e33 S), is composed
of different lithologies, ranging from gabbros to trondhjemites, including diorites, tonalites and granodiorites.
U/Pb ...
An integrated paleomagnetic and multispecimen paleointensity study from the late Jurassic Zapicán dike swarm (Uruguay)
(Pergamon-Elsevier Science Ltd, 2020-12-22)
A rock magnetic, paleomagnetic and absolute intensity study was conducted on 21 basic dike swarms situated in the Zapicán area (Lavalleja, Uruguay). Paleomagnetic directions revealed mostly normal polarity magnetizations ...
Geophysical exploration of disseminated and stockwork deposits associated with plutonic intrusive rock: a case study on the eastern flank of colombia’s western cordillera
(UNIVERSIDAD NACIONAL DE COLOMBIA, 2012)
Disseminated deposits are low-grade, large tonnage deposits which are mainly mined for gold, copper, molybdenum and tin. These deposits are normally associated with intermediate to acid plutonic intrusive rocks and all are ...