@article {2438,
	title = {MAGic: A Phanerozoic model for the geochemical cycling of major rock-forming components},
	journal = {American Journal of Science},
	volume = {306},
	year = {2006},
	note = {53},
	month = {Mar},
	pages = {135-190},
	abstract = {A dynamical model (MAGic) is presented that describes the elemental cycling of sedimentary materials involving sodium, potassium, calcium, magnesium, chloride, carbon, oxygen, iron, sulfur and phosphorous through much of the Phanerozoic. The model incorporates the basic reactions controlling atmospheric carbon dioxide and oxygen concentrations, continental and seafloor weathering of silicate and carbonate rocks, net ecosystem productivity, basalt-seawater exchange reactions, precipitation and diagenesis of chemical sediments and authigenic silicates, oxidation-reduction reactions involving carbon, sulfur, and iron, and subduction-decarbonation reactions. Although MAGic contains feedback and forcing functions adapted from the GEOCARB models (Berner, 1991, 1994; Berner and Kothavala, 2001), these functions are incorporated in a reservoir-reaction scheme that is considerably more detailed. Coupled reservoirs include shallow and deep cratonic silicate and carbonate rocks and sediments, seawater, atmosphere, oceanic sediments and basalts, and the shallow mantle. Model results are reasonably consistent with recently published constraints provided by fluid inclusion, isotopic, floral, and mineralogical records. We have used these results to evaluate sensitivity to uncertainties in the history of the earth-ocean-atmosphere system over the past 500 Ma: the advent of pelagic carbonate sedimentation, the importance of burial versus early diagenetic dolomite formation, the importance of reverse weathering, and the relationship of these processes to seafloor spreading rates. Results include a general pattern of dolomite abundance during periods of elevated seafloor spreading and alkalinity production, elevated atmospheric CO2 concentrations for most of the Phanerozoic similar to those predicted by GEOCARB, and covariance of seawater sulfate to calcium ratios with magnesium to calcium ratios. These trends are broadly consistent with proxies for seawater composition and the mass-age data of the rock record itself.},
	keywords = {ATMOSPHERIC CARBON-DIOXIDE, CENOZOIC EVOLUTION, Clay minerals, CO2, DOLOMITE PROBLEM, marine-sediments, REVISED MODEL, SEAWATER CHEMISTRY, SECULAR VARIATION, time},
	isbn = {0002-9599},
	doi = {10.2475/ajs.306.3.135 },
	author = {Arvidson, R. S. and Mackenzie, F. T. and Guidry, M.}
}
@article {2094,
	title = {Precambrian marine carbonate isotope database: Version 1.1},
	journal = {Geochemistry Geophysics Geosystems},
	volume = {3},
	year = {2002},
	note = {561enTimes Cited:103
Cited References Count:26
},
	month = {Jun 6},
	pages = {1-12},
	abstract = {[1] We present a compilation of strontium, carbon, and oxygen isotope compositions of roughly 10,000 marine carbonate rocks of Archean - Ordovician age (3800 Ma - 450 Ma). The Precambrian Marine Carbonate Isotope Database (PMCID) has been compiled from 152 published and 3 unpublished articles and books of the past 40 years. Also included are 30 categories of relevant "metadata{\textquoteright}{\textquoteright} that allow detailed comparisons and quality assessments of the isotope data to be made. The PMCID will be updated periodically as new data and better age constraints come to light. Here we outline the structure of the first published version of the database and its inherent merits and limitations.},
	keywords = {1010 geochemistry : chemical evolution, 1030 geochemistry : geochemical cycles (0330), 1040 geochemistry : isotopic composition/chemistry, 1050 geochemistry : marine geochemistry (4835,4850), calcite, carbonates, cycle, dolomite, evolution, Geochemistry, isotope stratigraphy, oceans, precambrian, SEAWATER, sediments, strontium, sulfur, time},
	isbn = {1525-2027},
	doi = {10.1029/2001GC000266},
	author = {Shields, G. and Veizer, J.}
}
@article {2190,
	title = {Detecting holocene changes in thermohaline circulation},
	journal = {Proc Natl Acad Sci U S A},
	volume = {97},
	year = {2000},
	note = {Keigwin, L DBoyle, E A
eng
Research Support, U.S. Gov{\textquoteright}t, Non-P.H.S.
2000/03/04 09:00
Proc Natl Acad Sci U S A. 2000 Feb 15;97(4):1343-6.
},
	month = {Feb 15},
	pages = {1343-6},
	abstract = {Throughout the last glacial cycle, reorganizations of deep ocean water masses were coincident with rapid millennial-scale changes in climate. Climate changes have been less severe during the present interglacial, but evidence for concurrent deep ocean circulation change is ambiguous.},
	keywords = {*Climate, *Plankton, Animals, Atlantic Ocean, carbon isotopes, ice, oxygen isotopes, time},
	isbn = {0027-8424 (Print)0027-8424 (Linking)},
	doi = {10.1073/pnas.97.4.1343},
	url = {https://www.ncbi.nlm.nih.gov/pubmed/10677463},
	author = {Keigwin, L. D. and Boyle, E. A.}
}
