Published on 01 January 2001

(Table 1) Core intervals of sediment core CRP-3 that have been stitched and reorientated to North

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Jarrard, Richard D;Paulsen, Timothy S;Wilson, Terry

Description

CRP-3 cores were not orientated with respect to North during coring operations. However, borehole televiewer (BHTV) logging did obtain azimuthally orientated images of the borehole wall, and core processing included digital imaging of the outer surface of 85% of the cores. Images of many individual core segments can be digitally joined, or stitched, by rotating them to match the shapes of their adjoining surfaces and then closing the gap. By aligning features (fractures, bedding, and clasts) on stitched-core images with correlative features on orientated BHTV images, we reorientated 231 m of core, or 25% of the cored interval. We estimate that the orientation uncertainty is ±10° for entire stitched-core intervals, and ±15° for individual features such as a single fracture or palaeomagnetic sample. Reliability of core orientations was confirmed by comparing azimuths of bedding and fractures measured directly within these reorientated cores to those measured within orientated borehole televiewer images.

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Metrics

Dataset Index

1.0

FAIR Score

96%

Citations

0

Mentions

0

Metrics Over Time

Publication Details

DOI

Publisher

PANGAEA

Assigned Domain

Subfield

Geophysics

Field

Earth and Planetary Sciences

Domain

Physical Sciences

Confidence Score

32%

Source

Scholar Data Model

Keywords

DEPTH, sediment/rockDepth, top/minDepth, bottom/maxNumber of observationsAngleStandard deviationConfidenceCore wireline systemCRP-3Sampling/drilling from iceCape Roberts Project (CRP)

Normalization Factors

FT

30.77

CTw

1.00

MTw

1.00