التفاصيل البيبلوغرافية
| العنوان: |
Stratigraphy of Reinga and Aotea basins, NW New Zealand: constraints from dredge samples on regional correlations and reservoir character. |
| المؤلفون: |
Browne, GH, Lawrence, MJF, Mortimer, N, Clowes, CD, Morgans, HEG, Hollis, CJ, Beu, AG, Black, JA, Sutherland, R, Bache, F |
| المصدر: |
New Zealand Journal of Geology & Geophysics; Sep2016, Vol. 59 Issue 3, p396-415, 20p, 1 Color Photograph, 6 Diagrams, 4 Charts, 1 Graph, 2 Maps |
| مصطلحات موضوعية: |
STRATIGRAPHIC geology, SANDSTONE, MICROPALEONTOLOGY |
| مستخلص: |
Sandstone, mudstone and limestone samples dredged in the Reinga and Aotea basins, NW New Zealand during voyage TAN1312 provide age and lithological constraints on the Cretaceous–Neogene succession. A total of 46 micropaleontology and 7 macropaleontology samples were examined along with 84 thin-sectioned petrographical samples. Some were examined by X-ray diffraction and porosity-permeability analyses. Late Cretaceous sandstones are dominated by feldspathic and lithofeldspathic compositions, with mixed granitic plutoniclastic and volcaniclastic provenance; a comparison with Pakawau Group of Taranaki Basin is appropriate. Late Cretaceous–Paleogene mudstones are widespread and display close petrographical and age similarities to the Whangai Formation facies of other parts of New Zealand and fine-grained carbonate facies of the Weber and Amuri formations of eastern North and South Islands, respectively. Cretaceous limestone and Paleogene sandstone were not recovered. Carbonates and mudstones dominate the Neogene succession of Reinga and Aotea basins; rare Neogene sandstones have feldspatholithic compositions and resemble Waitemata Group sandstones of the northern North Island. In terms of petroleum prospectivity, Cretaceous sandstones represent a potential reservoir facies but are lithic with low permeability. [ABSTRACT FROM PUBLISHER] |
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| قاعدة البيانات: |
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