K/Ar AND ^<40>Ar/^<39>Ar MINERAL AGES ACROSS THE LUTZOW-HOLM COMPLEX, EAST ANTARCTICA

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概要

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• K/Ar and ^<40>Ar/^<39>Ar mineral ages are presented for a variety of rock types from several localities across the high-grade Lutzow-Holm Complex of East Antarctica. Results indicate setting of the K/Ar isotopic system took place between ∿500-450Ma throughout this terrain. These ages represent the time of cooling and stabilization of the region following Pan African orogenic activity as recorded by U/Pb zircon ages. Despite the broad consistency of ages, the results also indicate a significant variation in timing and rate of cooling between localities within the terrain, with average cooling rates being greater in rocks which experienced higher peak metamorphic conditions.

• 国立極地研究所の論文

著者

• Fraser Geoffrey

  Research School Of Earth Sciences Australian National University

• MCDOUGALL Ian

  Research School of Earth Sciences, Australian National University

• Mcdougall Ian

  Research School Of Earth Sciences Australian National University

関連論文

• GEOCHRONOLOGICAL CONSTRAINTS ON THE METAMORPHIC EVOLUTION AT RUNDVAGSHETTA, EAST ANTARCTICA
• SAPPHIRINE-BEARING SILICA-UNDERSATURATED GRANULITES FROM FOREFINGER POINT, ENDERBY LAND, EAST ANTARCTICA : EVIDENCE FOR A CLOCKWISE P-T PATH?
• REACTION TEXTURES IN GRANULITES FROM FOREFINGER POINT, ENDERBY LAND, EAST ANTARCTICA : AN ALTERNATIVE INTERPRETATION ON THE METAMORPHIC EVOLUTION OF THE RAYNER COMPLEX
• PRELIMINARY REPORT ON STRUCTURES OF FOREFINGER POINT, ENDERBY LAND, EAST ANTARCTICA
• STRUCTURAL EVOLUTION OF RUNDVAGSHETTA REGION, LUTZOW-HOLM BAY, EAST ANTARCTICA
• ON CALC-SILICATE ROCKS FROM WEST ONGUL ISLAND, LUTZOW-HOLM BAY, EAST ANTARCTICA
• K/Ar AND ^Ar/^Ar MINERAL AGES ACROSS THE LUTZOW-HOLM COMPLEX, EAST ANTARCTICA

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