Testarmata, Margaret M; Gose, Wulf A (1984): (Table 1) Components of magnetization at DSDP Hole 77-538A [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.809677, Supplement to: Testarmata, MM; Gose, WA (1984): Paleomagnetism of the Cretaceous/Tertiary boundary, Deep Sea Drilling Project Leg 77, southeastern Gulf of Mexico. In: Buffler, RT; Schlager, W; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 77, 539-543, https://doi.org/10.2973/dsdp.proc.77.121.1984
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Abstract:
At DSDP Sites 536 and 538 in the southeastern Gulf of Mexico, rocks from near the Cretaceous/Tertiary boundary were recovered. The Danian/Maestrichtian samples from Site 536 were stepwise demagnetized in alternating fields up to 400 Oe. Two distinct components of magnetization could be identified, neither of which displays a reversal pattern compatible with the age of the samples. Samples from the Danian section at Site 538 were subjected to a combination of alternating field and thermal demagnetization. Although several reversals are observed, a unique correlation with the magnetic time scale is not possible until the paleontology of the section is better defined.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Latitude: 23.849200 * Longitude: -85.165500
Date/Time Start: 1981-01-14T00:00:00 * Date/Time End: 1981-01-14T00:00:00
Minimum DEPTH, sediment/rock: 179.13 m * Maximum DEPTH, sediment/rock: 181.24 m
Event(s):
77-538A * Latitude: 23.849200 * Longitude: -85.165500 * Date/Time: 1981-01-14T00:00:00 * Elevation: -2742.0 m * Penetration: 332.5 m * Recovery: 137.6 m * Location: Gulf of Mexico/KNOLL * Campaign: Leg77 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 36 cores; 332.5 m cored; 0 m drilled; 41.4 % recovery
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample code/label | Sample label | Testarmata, Margaret M | DSDP/ODP/IODP sample designation | # = Samples collected postcruise and demagnetized in a different sequence of steps than the original 11 samples | |
| 2 | DEPTH, sediment/rock | Depth sed | m | Geocode – mbsf | ||
| 3 | NRM, Declination | Decl (NRM) | deg | Testarmata, Margaret M | Magnetometer (MAG) | Component 1 |
| 4 | NRM, Inclination | Incl (NRM) | deg | Testarmata, Margaret M | Magnetometer (MAG) | Component 1 |
| 5 | NRM, Declination | Decl (NRM) | deg | Testarmata, Margaret M | Magnetometer (MAG) | Component 2 |
| 6 | NRM, Inclination | Incl (NRM) | deg | Testarmata, Margaret M | Magnetometer (MAG) | Component 2 |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
74 data points
Data
| 1 Sample label (# = Samples collected postcru...) | 2 Depth sed [m] (mbsf) | 3 Decl (NRM) [deg] (Component 1, Magnetometer) | 4 Incl (NRM) [deg] (Component 1, Magnetometer) | 5 Decl (NRM) [deg] (Component 2, Magnetometer) | 6 Incl (NRM) [deg] (Component 2, Magnetometer) |
|---|---|---|---|---|---|
| 77-538A-20-4,113 | 179.13 | 331.4 | 44.4 | 116.9 | -22.5 |
| 77-538A-20-4,127 | 179.27 | 211.3 | 6.2 | 143.4 | -29.4 |
| 77-538A-20-4,145 | 179.45 | 297.6 | 55.9 | ||
| 77-538A-20-5,7 | 179.57 | 348.0 | 35.3 | 262.7 | 50.4 |
| 77-538A-20-5,19# | 179.69 | 284.6 | 42.8 | 124.4 | -44.0 |
| 77-538A-20-5,26 | 179.76 | 279.0 | 37.9 | 131.0 | -40.2 |
| 77-538A-20-5,30# | 179.80 | 303.4 | 49.4 | ||
| 77-538A-20-5,44# | 179.94 | 3.7 | 51.8 | 20.9 | 47.4 |
| 77-538A-20-5,50 | 180.00 | 143.1 | 27.4 | 36.3 | 45.3 |
| 77-538A-20-5,75 | 180.25 | 280.9 | 38.5 | ||
| 77-538A-20-5,96 | 180.46 | 218.2 | 28.4 | 256.9 | 36.2 |
| 77-538A-20-5,113 | 180.63 | 185.8 | 43.5 | 216.4 | 30.9 |
| 77-538A-20-6,11 | 181.11 | 191.2 | 40.1 | 82.9 | 50.3 |
| 77-538A-20-6,14# | 181.14 | 37.1 | 48.4 | 223.9 | -43.7 |
| 77-538A-20-6,21# | 181.21 | 28.9 | 52.4 | 97.7 | -6.2 |
| 77-538A-20-6,24 | 181.24 | 31.0 | 45.2 | 198.9 | -44.5 |