Dikes emplaced into fractured basement, Timna igneous complex, Israel

G. Baer, M. Beyth, Z. Reches

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Abstract

Dikes are usually envisioned as arrays of parallel segments dilated perpendicular to the direction of the least compressive stress. The paper describes four dikes of highly irregular shape intruded in the fractured basement in the Timna Igneous Complex, southern Israel. The dikes include a doleritic dike, 2.3 km long and 1.6 m to 32 m thick, and three andesitic dikes, up to 1.5 km long and 8 m thick. The dikes each display significant variations of dip, strike and thickness. The thickness variations correlate better with the segment attitude than with the position along the dikes. It is shown that the irregular shapes of the Timna dikes are the result of emplacement into fractured host rock under different paleostress states and driving pressures. -from Authors

Original languageEnglish
Pages (from-to)24,039-24,050
JournalJournal of Geophysical Research
Volume99
Issue numberB12
DOIs
StatePublished - 1994

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