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<md:lastName>Morad</md:lastName>
<md:firstName>S</md:firstName>
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<md:lastName>Al-Aasm</md:lastName>
<md:firstName>Ihsan S</md:firstName>
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<md:year>1997</md:year>
<md:title>(Table 1) Carbon, oxygen and strontium isotopic composition of the rhodochrosite nodules from DSDP Sites 503A and 503B</md:title>
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<md:lastName>Morad</md:lastName>
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<md:lastName>Al-Aasm</md:lastName>
<md:firstName>Ihsan S</md:firstName>
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<md:year>1997</md:year>
<md:title>Conditions of rhodochrosite-nodule formation in Neogene-Pleistocene deep-sea sediments: evidence from O, C and Sr isotopes</md:title>
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<md:source id="ref29043.journal14608" relatedTermIds="33973" type="journal">Sedimentary Geology</md:source>
<md:volume>114(1-4)</md:volume>
<md:URI>https://doi.org/10.1016/S0037-0738(97)00066-3</md:URI>
<md:pages>295-304</md:pages>
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<md:abstract>Calcic rhodochrosite occurs as nodules around burrows in late Neogene-early Pleistocene pelagic sediments of the Galapagos Ridge in the Guatemala Basin, eastern equatorial Pacific (DSDP Leg 68; Site 503). Growth was accomplished in the suboxic zone (d13C = -4.3 per mil to -1.3 per mil) at an estimated depth between ~30 and 70 cm beneath the seafloor. The rhodochrosites have 87Sr/86Sr ratios (0.708945–0.709073) that largely record the small-scale changes in seawater Sr-isotopic composition. The anomalous enrichment of the rhodochrosite in 18O isotopes (d18OPDB up to +6.4 per mil is attributed to the dissociation of gas hydrates.</md:abstract>
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<md:responsible>Gardner, James V</md:responsible>
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<md:comment>1 cores; 4.4 m cored; 0 m drilled; 109.1 % recovery</md:comment>
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