Automated Author Profile

Thompson, Patricia M E

Current S-Index

20.8

Sum of Dataset Indices for all datasets

Average Dataset Index per Dataset

1.6

Average Dataset Index per dataset

Total Datasets

13

Total datasets for this author

Average FAIR Score

91.6%

Average FAIR Score per dataset

Total Citations

1

Total citations to the author's datasets

Total Mentions

0

Total mentions of the author's datasets

S-Index Interpretation

S-Index Over Time

Cumulative Citations Over Time

Cumulative Mentions Over Time

Datasets

Isotope ratios and trace element concentrations of basalts from DSDP Leg 15 sites (Appendix 1)

Formation of the Cretaceous Caribbean plateau, including the komatiites of Gorgona, has been linked to the currently active Galápagos hotspot. We use Hf-Nd isotopes and trace element data to characterise both the Caribbean plateau and the Galápagos hotspot, and to investigate the relationship between them. Four geochemical components are identified in the Galápagos mantle plume: two 'enriched' components with epsilon-Hf and epsilon-Nd similar to enriched components observed in other mantle plumes, one moderately enriched component with high Nb/Y, and a fourth component which most likely represents depleted MORB source mantle. The Caribbean plateau basalt data form a linear array in Hf-Nd isotope space, consistent with mixing between two mantle components. Combined Hf-Nd-Pb-Sr-He isotope and trace element data from this study and the literature suggest that the more enriched Caribbean end member corresponds to one or both of the enriched components identified on Galápagos. Likewise, the depleted end member of the array is geochemically indistinguishable from MORB and corresponds to the depleted component of the Galápagos system. Enriched basalts from Gorgona partially overlap with the Caribbean plateau array in epsilon-Hf vs. epsilon-Nd, whereas depleted basalts, picrites and komatiites from Gorgona have a high epsilon-Hf for a given epsilon-Nd, defining a high-epsilon-Hf depleted end member that is not observed elsewhere within the Caribbean plateau sequences. This component is similar, however, in terms of Hf-Nd-Pb-He isotopes and trace elements to the depleted plume component recognised in basalts from Iceland and along the Reykjanes Ridge. We suggest that the Caribbean plateau represents the initial outpourings of the ancestral Galápagos plume. Absence of a moderately enriched, high Nb/Y component in the older Caribbean plateau (but found today on the island of Floreana) is either due to changing source compositions of the plume over its 90 Ma history, or is an artifact of limited sampling. The high-epsilon-Hf depleted component sampled by the Gorgona komatiites and depleted basalts is unique to Gorgona and is not found in the Caribbean plateau. This may be an indication of the scale of heterogeneity of the Caribbean plateau system; alternatively Gorgona may represent a separate oceanic plateau derived from a completely different Pacific plume, such as the Sala y Gomez.

Authors

  • Thompson, Patricia M E ;
  • Kempton, Pamela D ;
  • White, Rosalind V ;
  • Kerr, Andrew C ;
  • Tarney, J ;
  • Saunders, Andrew D ;
  • Fitton, J Godfrey ;
  • McBirney, A
1 Citation0 Mentions96% FAIR2.8 Dataset Index
10.1594/pangaea.7254692003

(Table 2) Major and trace element analyses of Pliocene arc pumices of ODP Hole 126-788C

No description available

Authors

  • Gill, James B ;
  • Seales, Conrad ;
  • Thompson, Patricia M E ;
  • Hochstaedter, Alfred G ;
  • Dunlap, Charles
0 Citations0 Mentions96% FAIR2.4 Dataset Index
10.1594/pangaea.7744021992

(Table 3) Trace element analyses of arc and rift volcanic rocks

No description available

Authors

  • Gill, James B ;
  • Seales, Conrad ;
  • Thompson, Patricia M E ;
  • Hochstaedter, Alfred G ;
  • Dunlap, Charles
0 Citations0 Mentions96% FAIR1.0 Dataset Index
10.1594/pangaea.7744051992

(Table 4) Sr and Nd isotopic analysis of arc and rift volcanic rocks

No description available

Authors

  • Gill, James B ;
  • Seales, Conrad ;
  • Thompson, Patricia M E ;
  • Hochstaedter, Alfred G ;
  • Dunlap, Charles
0 Citations0 Mentions88% FAIR0.7 Dataset Index
10.1594/pangaea.7744061992

(Table 5) Major and trace element analyses of anhydrous Pleistocene pumice

No description available

Authors

  • Gill, James B ;
  • Seales, Conrad ;
  • Thompson, Patricia M E ;
  • Hochstaedter, Alfred G ;
  • Dunlap, Charles
0 Citations0 Mentions94% FAIR0.3 Dataset Index
10.1594/pangaea.7744121992

(Table 7) Major and trace element analyses of rift basement ODP Leg 126 samples

No description available

Authors

  • Gill, James B ;
  • Seales, Conrad ;
  • Thompson, Patricia M E ;
  • Hochstaedter, Alfred G ;
  • Dunlap, Charles
0 Citations0 Mentions88% FAIR2.2 Dataset Index
10.1594/pangaea.7744131992

(Table 8) Modal phenocryst mineralogy of rift basement ODP Leg 126 samples

No description available

Authors

  • Gill, James B ;
  • Seales, Conrad ;
  • Thompson, Patricia M E ;
  • Hochstaedter, Alfred G ;
  • Dunlap, Charles
0 Citations0 Mentions94% FAIR0.1 Dataset Index
10.1594/pangaea.7744151992

(Table 9) Representative plagioclase analyses of ODP Hole 126-791B and Alvin samples

No description available

Authors

  • Gill, James B ;
  • Seales, Conrad ;
  • Thompson, Patricia M E ;
  • Hochstaedter, Alfred G ;
  • Dunlap, Charles
0 Citations0 Mentions88% FAIR2.2 Dataset Index
10.1594/pangaea.7744161992

(Table 10) Representative clinopyroxene analyses of ODP Hole 126-791B and Alvin samples

No description available

Authors

  • Gill, James B ;
  • Seales, Conrad ;
  • Thompson, Patricia M E ;
  • Hochstaedter, Alfred G ;
  • Dunlap, Charles
0 Citations0 Mentions88% FAIR2.2 Dataset Index
10.1594/pangaea.7744181992

(Table 11) Representative olivine analyses of ODP Hole 126-791B and Alvin samples

No description available

Authors

  • Gill, James B ;
  • Seales, Conrad ;
  • Thompson, Patricia M E ;
  • Hochstaedter, Alfred G ;
  • Dunlap, Charles
0 Citations0 Mentions88% FAIR2.2 Dataset Index
10.1594/pangaea.7744191992