Tectonic framework of the East Coast margin

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Tectonic framework of the East Coast margin

• Keith Lewis
• NIWA, Greta Point, Wellington.

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Arc Backarc Volcanism
Main Ranges Main Backstop
Uplifted Forearc Basin
Imbricate-thrust Tertiary slope
sediments Deforming backstop
Imbricate-thrust, off-scraped Plio-Pleistocene
trench sediments True Accretionary Prism
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Margin Indentations
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Ruatoria Margin Indentation
Ruatoria Giant Avalanche Deposit
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Ruatoria Indentation
Gisborne
Poverty Indentation
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EM300 swath image and seismic profiles of
Poverty Indentation - unpublished data