Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Thy, Peter; Lesher, Charles E; Mayfield, J D (1999): Geochemical composition during experimental melting of basaltic flows from ODP Leg 152 and Leg 163 sites [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.804686, Supplement to: Thy, P et al. (1999): Low-pressure melting studies of basalt and basaltic andesite from the Southeast Greenland continental margin and the origin of dacites at Site 917. In: Larsen, HC; Duncan, RA; Allan, JF; Brooks, K (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 163, 1-18, https://doi.org/10.2973/odp.proc.sr.163.114.1999

Always quote citation above when using data! You can download the citation in several formats below.

RIS CitationBibTeX CitationShow MapGoogle Earth

Abstract:
A series of 1-atm. melting experiments on basaltic flows collected from Holes 918D and 989B in the oceanic succession of the East Greenland continental margin can be used to define possible phase equilibria and liquid lines of descent. A sample from Site 918 (Section 152-918D-108R-2) shows the melting order low-Ca pyroxene (1153ºC), augite (1182ºC), olivine (1192ºC), and plagioclase (1192ºC). A sample from Site 989 (Section 163-989B-10R-7) melts in the order of low-Ca pyroxene (1113ºC), augite (1167ºC), plagioclase (1177ºC), and olivine (1184ºC). In particular, the relatively early appearance of low-Ca pyroxene distinguishes the melting relations for the oceanic succession from those observed for the basaltic continental succession at Site 917. A basaltic andesite flow from the Middle Series at Site 917 (Section 152-917A-27R-4) shows the melting order of low-Ca pyroxene (1142ºC), plagioclase (1173ºC), and olivine (1173ºC). This melting order is difficult to reconcile with the observed large compositional variations in SiO2 and FeO for the Middle Series, which imply early magnetite fractionation. Major element considerations and rare-earth element modeling of the dacites of the Middle Series suggest that they formed by low extent of melting (<20%) of continental hydrated gabbroic or mafic amphibolite at pressures <8 kbar. These crustally derived melts represent possible contaminants of basaltic magmas of the Lower and Middle Series at Site 917.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 63.319967 * Median Longitude: -39.307560 * South-bound Latitude: 63.092900 * West-bound Longitude: -39.901900 * North-bound Latitude: 63.522500 * East-bound Longitude: -38.638900
Date/Time Start: 1993-10-10T02:00:00 * Date/Time End: 1995-09-20T13:30:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
6 datasets

Download Data

Download ZIP file containing all datasets as tab-delimited text — use the following character encoding:

Datasets listed in this publication series

  1. Thy, P; Lesher, CE; Mayfield, JD (1999): (Table 3) Geochemical composition of experimental glass from ODP Holes 152-917A, 152-918D and 163-989B. https://doi.org/10.1594/PANGAEA.804682
  2. Thy, P; Lesher, CE; Mayfield, JD (1999): (Table 4) Geochemical composition of experimental olivine from ODP Holes 152-917A, 152-918D and 163-989B. https://doi.org/10.1594/PANGAEA.804683
  3. Thy, P; Lesher, CE; Mayfield, JD (1999): (Table 5) Geochemical composition of experimental plagioclase from ODP Holes 152-917A, 152-918D and 163-989B. https://doi.org/10.1594/PANGAEA.804684
  4. Thy, P; Lesher, CE; Mayfield, JD (1999): (Table 6) Geochemical composition of experimental pyroxenes from ODP Holes 152-917A, 152-918D and 163-989B. https://doi.org/10.1594/PANGAEA.804685
  5. Thy, P; Lesher, CE; Mayfield, JD (1999): (Table 2) Experimental phase assemblage and CIPW phase proportions of ODP Holes 152-917A, 152-918D and 163-989B. https://doi.org/10.1594/PANGAEA.804681
  6. Thy, P; Lesher, CE; Mayfield, JD (1999): (Table 1) Major element and mineral composition of ODP Holes 152-917A, 152-918D and 163-989B. https://doi.org/10.1594/PANGAEA.804680