(Table T4) Final depth vs. velocity and two-way traveltime data, ODP Site 178-1103, supplement to: Moerz, Tobias; Laronga, R; Lauer-Leredde, C; Escutia Dotti, Carlota; Wolf-Welling, Thomas C W (2001): Composite velocity profile of shelf Site 1103 (ODP Leg178, western Antarctic Peninsula). In: Barker, PF; Camerlenghi, A; Acton, GD; Ramsay, ATS (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 178, 1-34


Site 1103 was one of a transect of three sites drilled across the Antarctic Peninsula continental shelf during Leg 178. The aim of drilling on the shelf was to determine the age of the sedimentary sequences and to ground truth previous interpretations of the depositional environment (i.e., topsets and foresets) of progradational seismostratigraphic sequences S1, S2, S3, and S4. The ultimate objective was to obtain a better understanding of the history of glacial advances and retreats in this west Antarctic margin. Drilling the topsets of the progradational wedge (0-247 m below seafloor [mbsf]), which consist of unsorted and unconsolidated materials of seismic Unit S1, was very unfavorable, resulting in very low (2.3%) core recovery. Recovery improved (34%) below 247 mbsf, corresponding to sediments of seismic Unit S3, which have a consolidated matrix. Logs were only obtained from the interval between 75 and 244 mbsf, and inconsistencies on the automatic analog picking of the signals received from the sonic log at the array and at the two other receivers prevented accurate shipboard time-depth conversions. This, in turn, limited the capacity for making seismic stratigraphic interpretations at this site and regionally.

DOI http://dx.doi.org/doi:10.1594/PANGAEA.138819
Metadata Access http://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite3&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.138819
Creator Escutia Dotti, Carlota;Wolf-Welling, Thomas C W;Moerz, Tobias;Lauer-Leredde, C;Laronga, R
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2001
Rights Creative Commons Attribution 3.0 Unported (CC-BY)
Language English
Resource Type Supplementary Dataset
Format text/tab-separated-values
Discipline Earth System Research
Spatial Coverage (64S,65W)
Temporal Point 1998-04-04T11:59:59Z