3-DIMENSIONAL STRATIGRAPHIC EVOLUTION OF THE MIOCENE BALTIMORE CANYONREGION - IMPLICATIONS FOR EUSTATIC INTERPRETATIONS AND THE SYSTEMS TRACT MODEL

Citation
Cj. Poulsen et al., 3-DIMENSIONAL STRATIGRAPHIC EVOLUTION OF THE MIOCENE BALTIMORE CANYONREGION - IMPLICATIONS FOR EUSTATIC INTERPRETATIONS AND THE SYSTEMS TRACT MODEL, Geological Society of America bulletin, 110(9), 1998, pp. 1105-1122
Citations number
32
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Geosciences, Interdisciplinary
ISSN journal
0016-7606
Volume
110
Issue
9
Year of publication
1998
Pages
1105 - 1122
Database
ISI
SICI code
0016-7606(1998)110:9<1105:3SEOTM>2.0.ZU;2-A
Abstract
A seismic stratigraphic analysis of Miocene deposits in the Baltimore Canyon region (offshore New Jersey) reveals tremendous three-dimension al complexity and challenges traditional approaches to sequence strati graphic interpretation. Individual sequences vary dramatically in alon g-strike thickness, revealing the locations of the sediment sources. W ithin sequences, the lowstand wedge thins dramatically along strike (t ens to hundreds of meters) and is interpreted to record variable paleo bathymetry along strike. As indicated by sequence thickness distributi ons, shelf break positions, lithologic composition, and stratigraphic relationships, sequences record sediment migration and progradation ac ross the basin through time. As a result of these depositional complex ities, relative sea-level curves, interpreted from parallel dip lines, vary in magnitude and amplitude across the basin. Development of Neog ene stratal patterns within the Baltimore Canyon region has been close ly linked to glacioeustatic change. Our reconstructions of delta switc hing and progradation emphasize that Miocene stratal patterns were gre atly influenced by autocyclic depositional processes.