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Jagoutz, Oliver; Müntener, Othmar; Manatschal, Gianreto; Rubatto, Daniela; Péron-Pinvidic, Gwenn; Turrin, Brent D; Villa, Igor M (2007): Ar and U-Th-Pb age determinations for minerals from ODP Holes of ODP Legs 173 and 210 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.722550, Supplement to: Jagoutz, O et al. (2007): The rift-to-drift transition in the North Atlantic: A stuttering start of the MORB machine? Geology, 35(12), 1087-1090, https://doi.org/10.1130/G23613A.1

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Abstract:
We report U-Pb and 39Ar-40Ar measurements on plutonic rocks recovered from the Ocean Drilling Program (ODP) Legs 173 and 210. Drilling revealed continental crust (Sites 1067 and 1069) and exhumed mantle (Sites 1070 and 1068) along the Iberia margin and exhumed mantle (Site 1277) on the conjugate Newfoundland margin. Our data record a complex igneous and thermal history related to the transition from rifting to seafloor spreading. The results show that the rift-to-drift transition is marked by a stuttering start of MORB-type magmatic activity. Subsequent to initial alkaline magmatism, localized mid-oceanic ridge basalts (MORB) magmatism was again replaced by basin-wide alkaline events, caused by a low degree of decompression melting due to tectonic delocalization of deformation. Such "off-axis" magmatism might be a common process in (ultra-) slow oceanic spreading systems, where "magmatic" and "tectonic" spreading varies in both space and time.
Other version:
Analytical techniques - supplement material (Table 1, Table 2)
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 42.011125 * Median Longitude: -21.312290 * South-bound Latitude: 40.682500 * West-bound Longitude: -44.376667 * North-bound Latitude: 45.196667 * East-bound Longitude: -11.595830
Date/Time Start: 1997-05-01T22:45:00 * Date/Time End: 2003-09-04T00:00:00
Event(s):
173-1067A * Latitude: 40.682500 * Longitude: -11.595830 * Date/Time Start: 1997-05-01T22:45:00 * Date/Time End: 1997-05-10T18:15:00 * Elevation: -5020.9 m * Penetration: 855.6 m * Recovery: 77.67 m * Location: South Atlantic Ocean * Campaign: Leg173 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 23 cores; 207.6 m cored; 648 m drilled; 37.4 % recovery
173-1068A * Latitude: 40.682580 * Longitude: -11.612000 * Date/Time Start: 1997-05-10T18:15:00 * Date/Time End: 1997-05-22T05:30:00 * Elevation: -5043.9 m * Penetration: 955.8 m * Recovery: 180.59 m * Location: South Atlantic Ocean * Campaign: Leg173 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 29 cores; 244.5 m cored; 711.3 m drilled; 73.9 % recovery
173-1069A * Latitude: 40.726860 * Longitude: -11.777200 * Date/Time Start: 1997-05-22T05:30:00 * Date/Time End: 1997-05-31T14:45:00 * Elevation: -5074.8 m * Penetration: 959.3 m * Recovery: 95.89 m * Location: South Atlantic Ocean * Campaign: Leg173 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 25 cores; 240.5 m cored; 718.8 m drilled; 39.9 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
7 datasets

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Datasets listed in this publication series

  1. Jagoutz, O; Müntener, O; Manatschal, G et al. (2007): (Table 1) 39Ar-40Ar age determinations for minerals from ODP Hole 173-1070. https://doi.org/10.1594/PANGAEA.722542
  2. Jagoutz, O; Müntener, O; Manatschal, G et al. (2007): (Table 1) 39Ar-40Ar age determinations for minerals from ODP Hole 210-1277. https://doi.org/10.1594/PANGAEA.722543
  3. Jagoutz, O; Müntener, O; Manatschal, G et al. (2007): (Table 2) Ar-Ar results for minerals from ODP Hole 173-1067A. https://doi.org/10.1594/PANGAEA.722544
  4. Jagoutz, O; Müntener, O; Manatschal, G et al. (2007): (Table 2) Ar-Ar results for minerals from ODP Hole 173-1068A. https://doi.org/10.1594/PANGAEA.722545
  5. Jagoutz, O; Müntener, O; Manatschal, G et al. (2007): (Table 2) Ar-Ar results for minerals from ODP Hole 173-1069A. https://doi.org/10.1594/PANGAEA.722546
  6. Jagoutz, O; Müntener, O; Manatschal, G et al. (2007): (Table 2) Ar-Ar results for minerals from ODP Hole 173-1070A. https://doi.org/10.1594/PANGAEA.722547
  7. Jagoutz, O; Müntener, O; Manatschal, G et al. (2007): (Table 3) U-Th-Pb analyses of zircons from ODP sample 210-1277-9R-7,50-53. https://doi.org/10.1594/PANGAEA.722548