Ogg, James G (1983): (Appendix) Characteristic directions at DSDP Hole 76-534A [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.809947, Supplement to: Ogg, JG (1983): Magnetostratigraphy of upper Jurassic and lowest Cretaceous sediments, Deep Sea Drilling Project Site 534, western North Atlantic. In: Sheridan, RE; Gradstein, FM; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 76, 685-697, https://doi.org/10.2973/dsdp.proc.76.131.1983
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Abstract:
Kimmeridgian-Tithonian red marly limestones and Berriasian white limestones were recovered at Site 534 of DSDP Leg 76 in the western North Atlantic. These yielded a well-defined magnetostratigraphy with the characteristic magnetization carried by hematite in red sediments and magnetite in white sediments. The polarity sequence is correlated to the magnetostratigraphy of Kimmeridgian-Tithonian-Berriasian pelagic carbonates of northern Italy and southern Spain, allowing precise biostratigraphic age correlations. The Berriasian/Tithonian boundary occurs within the upper half of Core 90, the late Tithonian/early Tithonian boundary at the base of Core 96, and the Tithonian/Kimmeridgian boundary at the top of Core 102. Correlations are also made to M-16 through M-22 of the marine magnetic anomaly M-sequence. Poor recovery and irregular magnetic properties of the underlying Kimmeridgian-Oxfordian-Callovian marls and claystones prevented determination of a polarity sequence, but the entire interval has mixed polarity. Valanginian gray marly limestones have very weak magnetizations, and preliminary results are inadequate to determine the polarity pattern.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Latitude: 28.343300 * Longitude: -75.381700
Date/Time Start: 1980-10-21T00:00:00 * Date/Time End: 1980-10-21T00:00:00
Minimum Elevation: -4971.0 m * Maximum Elevation: -4971.0 m
Event(s):
76-534A * Latitude: 28.343300 * Longitude: -75.381700 * Date/Time: 1980-10-21T00:00:00 * Elevation: -4971.0 m * Penetration: 1666.5 m * Recovery: 612.4 m * Location: North Atlantic/BASIN * Campaign: Leg76 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 127 cores; 1113.1 m cored; 31.5 m drilled; 55 % recovery
Comment:
If the samples did not attain a reliable characteristic direction, the best demagnetization step is given and the inclination value is questionable.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample code/label | Sample label | Ogg, James G | DSDP/ODP/IODP sample designation | ||
| 2 | Inclination | Incl | deg | Ogg, James G | Magnetometer, long-core spinner, Digico | |
| 3 | Intensity | J | 10-6 emu/cm3 | Ogg, James G | Magnetometer, long-core spinner, Digico | |
| 4 | Demagnetization level | Level | °C | Ogg, James G | Magnetometer, long-core spinner, Digico | |
| 5 | Demagnetizing field | Demag field | Oe | Ogg, James G |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
1286 data points