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Journal Article


Bedrock geology of DFDP-2B, central Alpine Fault, New Zealand

Toy, V. G., Sutherland, R., Townend, J., Allen, M. J., Becroft, L., Boles, A., Boulton, C., Carpenter, B., Cooper, A., Cox, S. C., Daube, C., Faulkner, D. R., Halfpenny, A., Kato, N., Keys, S., Kirilova, M., Kometani, Y., Little, T., Mariani, E., Melosh, B., Menzies, C. D., Morales, L., Morgan, C., Mori, H., Niemeijer, A., Norris, R., Prior, D., Sauer, K., Schleicher, A. M., Shigematsu, N., Teagle, D. A. H., Tobin, H., Valdez, R., Williams, J., Yeo, S., Baratin, L.-M., Barth, N., Benson, A., Boese, C., Célérier, B., Chamberlain, C. J., Conze, R., Coussens, J., Craw, L., Doan, M.-L., Eccles, J., Grieve, J., Grochowski, J., Gulley, A., Howarth, J., Jacobs, K., Janku-Capova, L., Jeppson, T., Langridge, R., Mallyon, D., Marx, R., Massiot, C., Mathewson, L., Moore, J., Nishikawa, O., Pooley, B., Pyne, A., Savage, M. K., Schmitt, D., Taylor-Offord, S., Upton, P., Weaver, K. C., Wiersberg, T., Zimmer, M. (2017): Bedrock geology of DFDP-2B, central Alpine Fault, New Zealand. - New Zealand Journal of Geology and Geophysics, 60, 4, pp. 497—518.
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Toy ,  Virginia Gail

Sutherland ,  Rupert

Townend ,  John

Allen ,  Michael J.

Becroft ,  Leeza

Boles ,  Austin

Boulton ,  Carolyn

Carpenter ,  Brett

Cooper ,  Alan

Cox ,  Simon C.

Daube ,  Christopher

Faulkner ,  Daniel R.

Halfpenny ,  Angela

Kato ,  Naoki

Keys ,  Stephen

Kirilova ,  Martina

Kometani ,  Yusuke

Little ,  Timothy

Mariani ,  Elisabetta

Melosh ,  Benjamin

Menzies ,  Catriona D

Morales ,  Luiz

Morgan ,  Chance

Mori ,  Hiroshi

Niemeijer ,  Andre

Norris ,  Richard

Prior ,  David

Sauer ,  Katrina

Schleicher ,  Anja Maria
3.1 Inorganic and Isotope Geochemistry, 3.0 Geochemistry, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

Shigematsu ,  Norio

Teagle ,  Damon A. H.

Tobin ,  Harold

Valdez ,  Robert

Williams ,  Jack

Yeo ,  Samantha

Baratin ,  Laura-May

Barth ,  Nicolas

Benson ,  Adrian

Boese ,  Carolin

Célérier ,  Bernard

Chamberlain ,  Calum J.

Conze ,  Ronald

Coussens ,  Jamie

Craw ,  Lisa

Doan ,  Mai-Linh

Eccles ,  Jennifer

Grieve ,  Jason

Grochowski ,  Julia

Gulley ,  Anton

Howarth ,  Jamie

Jacobs ,  Katrina

Janku-Capova ,  Lucie

Jeppson ,  Tamara

Langridge ,  Robert

Mallyon ,  Deirdre

Marx ,  Ray

Massiot ,  Cécile

Mathewson ,  Loren

Moore ,  Josephine

Nishikawa ,  Osamu

Pooley ,  Brent

Pyne ,  Alex

Savage ,  Martha K.

Schmitt ,  Doug

Taylor-Offord ,  Sam

Upton ,  Phaedra

Weaver ,  Konrad C.

Wiersberg ,  Thomas

Zimmer ,  Martin
3.1 Inorganic and Isotope Geochemistry, 3.0 Geochemistry, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

During the second phase of the Alpine Fault, Deep Fault Drilling Project (DFDP) in the Whataroa River, South Westland, New Zealand, bedrock was encountered in the DFDP-2B borehole from 238.5–893.2 m Measured Depth (MD). Continuous sampling and meso- to microscale characterisation of whole rock cuttings established that, in sequence, the borehole sampled amphibolite facies, Torlesse Composite Terrane-derived schists, protomylonites and mylonites, terminating 200–400 m above an Alpine Fault Principal Slip Zone (PSZ) with a maximum dip of 62°. The most diagnostic structural features of increasing PSZ proximity were the occurrence of shear bands and reduction in mean quartz grain sizes. A change in composition to greater mica:quartz + feldspar, most markedly below c. 700 m MD, is inferred to result from either heterogeneous sampling or a change in lithology related to alteration. Major oxide variations suggest the fault-proximal Alpine Fault alteration zone, as previously defined in DFDP-1 core, was not sampled.