Open AccessPalaeomagnetism of Neogene Ocros dyke swarm, the Peruvian Andes: implication for the Bolivian orocline
Author(s) -
Heki Kosuke,
Hamano YOZO,
Kono Masaru,
Ui Tadahide
Publication year - 1985
Publication title -
geophysical journal of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0016-8009
DOI - 10.1111/j.1365-246x.1985.tb05106.x
Subject(s) - paleomagnetism , neogene , geology , clockwise , lava , paleontology , seismology , swarm behaviour , polar wander , rotation (mathematics) , structural basin , volcano , geometry , mathematical optimization , mathematics
Summary. Remanent magnetization directions of 32 dykes and lava flows sampled near Ayacucho, the Peruvian Andes revealed 14.2°± 5.5° counterclockwise rotation after the Neogene intrusion of this dyke swarm. Palaeo‐magnetic results of these rocks and other palaeomagnetic evidences from the Central Andean Mesozoic rocks suggest relatively recent occurrence of the Andean oroclinal bending around the axis at the Peru‐Chile border.