نتایج جستجو برای: lineation

تعداد نتایج: 125  

Journal: :Geological Magazine 1951

2017

Lineation is a general term to describe any repeated, commonly penetrative and parallel alignment of linear elements within a rock (to envision lineation, imagine packages of spaghetti). A lineation may be a primary igneous or sedimentary fabric element, such as an array of elongate K-feldspar porphyroblasts, inclusions or pebbles oriented with their long dimensions mutually parallel, or flute ...

2002
Josep M. Parés Ben A. van der Pluijm

Magnetic lineation in rocks is given by a cluster of the principal axes of maximum susceptibility (Kmax) of the Anisotropy of Magnetic Susceptibility (AMS) tensor. In deformed rocks, magnetic lineations are generally considered to be the result of either bedding and cleavage intersection or they parallel the tectonic extension direction in high strain zones. Our AMS determinations, based on a v...

Journal: :Geological Magazine 1957

2004
Philip A. Candela

Title of Thesis: ROCK FABRIC ANALYSIS OF THE SIERRA CREST SHEAR ZONE SYSTEM, CALIFORNIA: IMPLICATIONS FOR CRUSTAL-SCALE TRANSPRESSIONAL SHEAR ZONES Callan Bentley, Master of Science, 2004 Thesis Directed By: Dazhi Jiang, Assistant Professor, Geology Department Crustal-scale tabular shear zones are common features of transpressional orogens and arcs. Though foliation development in shear zones i...

2002
Vadim Levin Lucia Margheriti Jeffrey Park Alessandro Amato

[1] PS converted waves observed near Ancona on the Adriatic coast of central Italy, as revealed by teleseismic receiver functions (RFs), vary with earthquake backazimuth and epicentral distance in a manner consistent with a 1-D anisotropic seismic structure. Using reflectivity calculations, we develop a profile of anisotropic seismic velocity through the Adriatic lithosphere at this locality. W...

2006
D. L. Buczkowski

Introduction: The Near-Earth Asteroid Rendezvous NEAR-Shoemaker spacecraft orbited the asteroid 433Eros for a year from 2000-2001. The NEAR Multi-Spectral Imager (MSI) collected tens of thousands of high resolution images and as a result Eros is the most comprehensively studied asteroid in the solar system. Previous mapping of lineaments on Eros has supported the suggestion of planes throughout...

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