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Present Sr-Nd isotope data set of oceanic basalts compiled from the <b>GEOROC</b> ...
Published: 01 October 2015
Figure 4.3 Present Sr-Nd isotope data set of oceanic basalts compiled from the GEOROC and PetDB databases. Note that the Samoan data extends to much higher 87 Sr/ 86 Sr (>0.720) than shown. Grey areas show the range of estimates of primitive mantle, or bulk silicate Earth, composition (see
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Present Hf-Nd isotope data set of oceanic basalts compiled from the <b>GEOROC</b> ...
Published: 01 October 2015
Figure 4.4 Present Hf-Nd isotope data set of oceanic basalts compiled from the GEOROC and PetDB databases.
Series: Geological Society, London, Special Publications
Published: 01 January 2018
DOI: 10.1144/SP463.5
EISBN: 9781786203441
... the magmas to build a continental LIP. Fig. 3. ( a )–( c ) CaO v. CaO/Al 2 O 3 variations in the Panjal, Rajmahal and Deccan basalts. Geochemical data used in this and all other figures were mainly extracted from the GEOROC database maintained by the Max Planck Institute für Chemie in Mainz...
FIGURES | View All (15)
Series: GSA Special Papers
Published: 01 January 2006
DOI: 10.1130/2006.2397(05)
... databases (GEOROC, PetDB), but with an emphasis on a structure that will easily allow these data to be queried and manipulated as functions of age, composition, and geographic position. The NAVDAT user interface includes a number of advanced query options including both graphical and map-plotting analysis...
FIGURES | View All (5)
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Pb isotope ratios in volcanics from three subduction zones compared with se...
Published: 01 October 2015
Figure 7.1 Pb isotope ratios in volcanics from three subduction zones compared with sediments on the adjacent subducting plate (data from GEOROC http://georoc.mpch-mainz.gwdg.de/georoc/ and SedDB http://www.earthchem.org/seddb ).
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ε Hf – 206 Pb/ 204 Pb in Hawaiian shield and post-shield phase basalts (dat...
Published: 01 October 2015
Figure 8.2 ε Hf – 206 Pb/ 204 Pb in Hawaiian shield and post-shield phase basalts (data from Georoc database georoc.mpch-mainz.gwdg.de/georoc/).
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ε Hf – 206 Pb/ 204 Pb in Hawaiian shield and post-shield phase basalts (dat...
Published: 01 October 2015
Figure 8.2 ε Hf – 206 Pb/ 204 Pb in Hawaiian shield and post-shield phase basalts (data from Georoc database georoc.mpch-mainz.gwdg.de/georoc/).
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87 Sr/ 86 Sr and  143 Nd/ 144 Nd isotopic variation (initial values) of law...
Published: 01 May 2019
Figure 8. 87 Sr/ 86 Sr and 143 Nd/ 144 Nd isotopic variation (initial values) of lawsonite blueschists. Sr and Nd isotopic data for MORB and OIB from the GEOROC database ( http://georoc.mpch-mainz.gwdg.de/georoc ), terrigenous sediment field from Rollinson (2014) . (Color online.)
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- Ce/Mo (log-scale) vs. Ce/Pb trace element ratios reported to investigate ...
Published: 01 October 2018
Fig. 7 - Ce/Mo (log-scale) vs. Ce/Pb trace element ratios reported to investigate the behaviour of Mo. Western Alps magmas are compared and Mariana arc lavas ( F reymuth et alii , 2015 ; E lliott et alii , 1997 ) and other arcs from GeoRoc ( georoc.mpch-mainz.gwdg.de/georoc/ ).
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- a) Th/Nb vs. Ba/Th; b)  143 Nd/ 144 Nd vs. Ba/Th of Western Alps ultrapot...
Published: 01 October 2018
Fig. 8 - a) Th/Nb vs. Ba/Th; b) 143 Nd/ 144 Nd vs. Ba/Th of Western Alps ultrapotassic and related rocks. Mariana arc lavas are from E lliott et alii (1997) other arcs are from GeoRoc ( georoc.mpch-mainz.gwdg.de/georoc/ ).
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Th/La vs. Sm/La comparison of lawsonite in blueschist sample 10tav07 (enric...
Published: 01 May 2019
Figure 15. Th/La vs. Sm/La comparison of lawsonite in blueschist sample 10tav07 (enriched terrigenous origin) and in the blueschists of MORB origin with Alpine-Himalayan Orogenic Belt lavas ( Wang et al. 2017 ), OIB (GEOROC database, http://georoc.mpch-mainz.gwdg.de/georoc ), MORB (GEOROC
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Figure 2. Pb, Sr, and Nd isotope data for the central plain Bruneau-Jarbidg...
in > Geology
Published: 01 January 2008
basalts (YP, green box; Doe et al., 1982 ; Hildreth et al., 1991 ); Columbia River Basalt group (CRB, black outline; GEOROC database), Saddle Mountains lavas (orange outline; GEOROC database), the Steens basalts ( Camp and Hanan, 2007 ), and for comparison, basalts from the Stonyford Volcanic Complex
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MgO variation diagrams of six key major elements (Ti, Al, Fe, Ca, Na, and K...
Published: 01 May 2019
Figure 4. MgO variation diagrams of six key major elements (Ti, Al, Fe, Ca, Na, and K from a to f , respectively) in the Tavşanlı zone blueschists. Also shown are MORB compositions (orange shaded fields, GEOROC database, http://georoc.mpch-mainz.gwdg.de/georoc ) and GLOSS (gray stars, Plank
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Whole-rock δ 18 O variation relative to LOI (loss on ignition) values of th...
Published: 01 October 2018
Fig. 6. Whole-rock δ 18 O variation relative to LOI (loss on ignition) values of the Borgarfjörður Eystri rhyolite samples. Literature values for Icelandic rhyolites are from the GEOROC database, http://georoc.mpch-mainz.gwdg.de/georoc/ . The intra-caldera rhyolites span a wide range in δ 18 O
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- a) Sm/La vs. Th/La of the studied Italian ultrapotassic and related sampl...
Published: 01 October 2018
Fig. 9 - a) Sm/La vs. Th/La of the studied Italian ultrapotassic and related samples along with the Mediterranean TRL from T ommasini et alii (2011) , and other subduction-related arcs from GeoRoc ( georoc.mpch-mainz.gwdg.de/georoc/ ); b) δ 98/95 Mo vs. Th/La; c) δ 238/235 U vs. Th/La.
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Global correlation between geophysically determined Moho depth and median S...
in > Geology
Published: 01 October 2015
Figure 2. Global correlation between geophysically determined Moho depth and median Sr/Y from Pliocene and younger magmatic arcs, compiled from GEOROC database (georoc.mpch-mainz.gwdg.de/georoc/). Median Sr/Y was calculated using same filters and processing steps as applied to Great Basin data
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A: Primitive mantle normalized rare earth element composition of the St.-Ho...
in > Geology
Published: 01 August 2015
and isotope systematics of mantle-derived carbonatites are after Jones et al. (2013) and the GEOROC database (georoc.mpch-mainz.gwdg.de/georoc/). EACL—East Africa carbonatite line ( Bell and Blenkinsop, 1987 ). Ap—apatite, Dol—dolomite, Phl—phlogopite.
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Covariation of Sc (as a depletion index) with V and Cr in peridotites from ...
Published: 01 May 2015
Fig. 8. Covariation of Sc (as a depletion index) with V and Cr in peridotites from Cordilleran mantle ophiolites ( Canil et al. 2006 ; Babechuk et al. 2010 ) compared with those for Kluane ultramafic rocks (this study) and igneous cumulate peridotites from the GEOROC database ( http
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Geochemical results of Eocene eastern North American Margin (ENAM) magmas c...
in > Geology
Published: 01 June 2014
is from McDonough and Sun (1995) . Additional data are from Janney and Castillo (2001) , Callegaro et al. (2013) , and GEOROC database (georoc.mpch-mainz.gwdg.de/georoc/).
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SiO 2  versus Al 2 O 3  discrimination diagram for McHugh Complex detrital ...
Published: 01 May 2012
Augustine Volcano, and from the Wrangellia terrane. Data are from GEOROC ( http://georoc.mpch-mainz.gwdg.de/georoc/ ).