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Hathorne, Ed C; Felis, Thomas; Suzuki, Atsushi; Kawahata, Hodaka; Cabioch, Guy (2013): (Table S1) Original element/Ca data for the OGA and Tahiti corals. PANGAEA, https://doi.org/10.1594/PANGAEA.810091, Supplement to: Hathorne, EC et al. (2013): Lithium in the aragonite skeletons of massive Porites corals: A new tool to reconstruct tropical sea surface temperatures. Paleoceanography, 28, 143-152, https://doi.org/10.1029/2012PA002311

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Abstract:
[1] Previous studies have demonstrated the potential for the Li content of coral aragonite to record information about environmental conditions, but no detailed study of tropical corals exists. Here we present the Li and Mg to Ca ratios at a bimonthly to monthly resolution over 25 years in two modern Porites corals, the genus most often used for paleoclimate reconstructions in the tropical Indo-Pacific. A strong relationship exists between coral Li/Ca and locally measured SST, indicating that coral Li/Ca can be used to reconstruct tropical SST variations. However, Li/Ca ratios of the skeleton deposited during 1979–1980 do not track local SST well and are anomalously high in places. The Mg/Ca ratios of this interval are also anomalously high, and we suggest Li/Ca can be used to reconstruct tropical SST only when Mg/Ca data are used to carefully screen for relatively rare biological effects. Mg/Li or Li/Mg ratios provide little advantage over Li/Ca ratios, except that the slope of the Li/Mg temperature relationship is more similar between the two corals. The Mg/Li temperature relationship for the coral that experienced a large temperature range is similar to that found for cold water corals and aragonitic benthic foraminifera in previous studies. The comparison with data from other biogenic aragonites suggests the relationship between Li/Mg and water temperature can be described by a single exponential relationship. Despite this hint at an overarching control, it is clear that biological processes strongly influence coral Li/Ca, and more calibration work is required before widely applying the proxy.
Coverage:
Median Latitude: 4.789900 * Median Longitude: 176.309600 * South-bound Latitude: -17.526100 * West-bound Longitude: 142.194100 * North-bound Latitude: 27.105900 * East-bound Longitude: -149.574900
Minimum DISTANCE: 0.000 cm * Maximum DISTANCE: 38.225 cm
Event(s):
OGA-02-1 * Latitude: 27.105900 * Longitude: 142.194100 * Elevation: -5.6 m * Location: Western Subtropical North Pacific Ocean, Chichijima, Ogasawara Islands, Japan * Device: Diver-held corer (DHC) * Comment: modern coral, time period 1873-1993 a AD
TAH-95 * Latitude: -17.526100 * Longitude: -149.574900 * Elevation: -4.0 m * Location: Tahiti, French Polynesia * Device: Diver-held corer (DHC) * Comment: drilled in June 1995 at 4-5 m water depth on the fore-reef slope of the Papeete barrier reef (Faré Uté) on the north side of Tahiti.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event labelEvent
2Sample IDSample IDHathorne, Ed C
3AGEAgeka BPGeocode
4AgeAgea ADHathorne, Ed C
5Age, commentCommHathorne, Ed C
6DISTANCEDistancecmGeocode
7Lithium/Calcium ratioLi/Caµmol/molHathorne, Ed CICP-MS, Inductively coupled plasma - mass spectrometry
8Magnesium/Calcium ratioMg/Cammol/molHathorne, Ed CICP-MS, Inductively coupled plasma - mass spectrometry
9Magnesium/Lithium ratioMg/Limol/mmolHathorne, Ed CICP-MS, Inductively coupled plasma - mass spectrometry
10Lithium/Magnesium ratioLi/Mgmmol/molHathorne, Ed CICP-MS, Inductively coupled plasma - mass spectrometry
11Aluminium/Calcium ratioAl/Cammol/molHathorne, Ed CICP-MS, Inductively coupled plasma - mass spectrometry
12Manganese/Calcium ratioMn/Cammol/molHathorne, Ed CICP-MS, Inductively coupled plasma - mass spectrometry
13CommentCommentHathorne, Ed C
Size:
1652 data points

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