@article {Faak2015,
	title = {{Near conductive cooling rates in the upper-plutonic section of crust formed at the East Pacific Rise}},
	journal = {Earth and Planetary Science Letters},
	volume = {423},
	year = {2015},
	pages = {36{\textendash}47},
	abstract = {A new geospeedometer, based on diffusion modeling of Mg in plagioclase, is used to determine cooling rates of the upper section of the lower oceanic crust formed at fast-spreading mid-ocean ridges. The investigated natural sample suites include gabbroic rocks formed at three different locations along the fast-spreading East Pacific Rise. These samples cover a depth interval of 0{\textendash}840 m below the sheeted dike/gabbro boundary and therefore allow the variation of cooling rate as a function of depth within the upper plutonic sequence to be determined. We demonstrate that the cooling rates we obtained are robust (reproducible and consistent across different vertical sections at fast spreading ridges) and decrease significantly with increasing sample depth (covering almost 4 orders of magnitude, ranging from \~{}1 {\textdegree}C y-1 for the shallowest samples to 0.0003 {\textdegree}C y-1 for the deepest samples). Both the absolute cooling rates, and the rate of decrease of cooling rate with depth, are consistent with conductive thermal models. In contrast, the absolute cooling rates determined from the deeper samples ({\textgreater}300 m below DGB), and the large decrease in cooling rate with depth are inconsistent with thermal models that include substantial cooling by off-axis hydrothermal circulation within the upper plutonic section of the crust.},
	keywords = {HOV Alvin (Human Occupied Vehicle), ROV Jason (Remotely Operated Vehicle)},
	doi = {10.1016/j.epsl.2015.04.025},
	author = {Faak, K and Coogan, L A and Chakraborty, S}
}
@article {Moore2014,
	title = {{Primitive melt replenishment and crystal-mush disaggregation in the weeks preceding the 2005{\textendash}2006 eruption 9{\textdegree}50'N9{\textdegree}50'N, EPR}},
	journal = {Earth and Planetary Science Letters},
	volume = {403},
	year = {2014},
	pages = {15{\textendash}26},
	abstract = {The 2005{\textendash}2006 eruption at \~{}9{\textdegree}50'N, East Pacific Rise provides an exceptional opportunity to investigate the magma plumbing system beneath a well-studied ridge system. The eruption was preceded by two years of increasingly intense seismicity and occurred from the same location as a previous and well-characterized eruption in 1991{\textendash}1992. Here we use the crystal cargo of samples from this eruption to investigate magma reservoir processes in the lead-up to the eruption, as well as their temporal relationship to the seismicity that preceded it. Compositional zoning in some plagioclase crystals indicates primitive melt replenishment occurred roughly six weeks or less before the eruption. This replenishing event is seen only in the crystals from the central region of the eruption (9{\textdegree}50'{\textendash}9{\textdegree}52'N). This is also the area where the most primitive lava compositions are observed and together these observations support models of replenishment being spatially focused. The short time between the input of a more primitive melt and eruption onto the seafloor suggests replenishment likely contributed to triggering the eruption. Rare resorbed plagioclase crystals, and glomerocrysts of plagioclase and olivine, some of which have rims far from equilibrium with their host melt, suggest that disaggregation of a crystal mush occurred within a few days prior to eruption. Interstitial melt from within this mush zone must have been mixed back into the erupted lava{\textemdash}a form of in situ crystallization. Thus, the erupted magmas evolved in a replenished-tapped magma reservoir in which at least a part of the crystallization occurred in situ.},
	keywords = {HOV Alvin (Human Occupied Vehicle)},
	doi = {10.1016/j.epsl.2014.06.015},
	author = {Moore, A and Coogan, L A and Costa, F and Perfit, M R}
}
@article {Barker2010,
	title = {{Insights into the behaviour of sulphur in mid-ocean ridge axial hydrothermal systems from the composition of the sheeted dyke complex at Pito Deep}},
	journal = {Chemical Geology},
	volume = {275},
	number = {1-2},
	year = {2010},
	pages = {105{\textendash}115},
	abstract = {The behaviour of seawater sulphate in hydrothermal systems at intermediate- to fast-spreading ridges is investigated using new analyses of the $δ$34S, sulphur concentration and Fe2O3/Fe2O3total, combined with existing 87Sr/86Sr, of sheeted dykes from the Pito Deep tectonic window. The Pito Deep sheeted dyke complex has a similar composition to the sheeted dykes drilled at ODP Hole 504B suggesting that the measured compositions are representative of sheeted dyke complexes at intermediate- to fast-spreading ridges. The dykes show only small increases in $δ$34S which, combined with the rock dominated $δ$34S of vent fluids, requires the majority of seawater sulphate to be precipitated as anhydrite before the fluid reacts with the sheeted dyke complex. This loss of sulphate from the fluid means that a much higher Fe2O3 in the sheeted dyke complex than in fresh MORB glasses cannot be explained by oxidation due to seawater sulphate reduction during fluid{\textendash}rock reaction. Instead, oxidation probably occurs due to degassing of reduced species, largely H2, during dyke emplacement and solidification. A mass balance model that accounts for anhydrite precipitation and Sr partitioning into the anhydrite, as well as fitting the concentration and isotopic ratios of S and Sr in the sheeted dykes and vent fluids, suggests water/rock ratios of \~{} 1. For a 1 km thick sheeted dyke complex this is equivalent to a fluid flux of \~{} 3 {\texttimes} 106 kg m- 2, sufficient to remove \~{} 60{\%} of the latent heat of crystallization from the lower crust.},
	keywords = {HOV Alvin (Human Occupied Vehicle), ROV Jason (Remotely Operated Vehicle)},
	issn = {0009-2541},
	doi = {10.1016/j.chemgeo.2010.05.003},
	url = {http://dx.doi.org/10.1016/j.chemgeo.2010.05.003},
	author = {Barker, A K and Coogan, L A and Gillis, K M}
}
@article {Perk2007,
	title = {{Petrology and geochemistry of primitive lower oceanic crust from Pito Deep: Implications for the accretion of the lower crust at the Southern East Pacific Rise}},
	journal = {Contributions to Mineralogy and Petrology},
	volume = {154},
	number = {5},
	year = {2007},
	pages = {575{\textendash}590},
	keywords = {HOV Alvin (Human Occupied Vehicle), ROV Jason (Remotely Operated Vehicle)},
	issn = {0010-7999},
	doi = {10.1007/s00410-007-0210-z},
	url = {http://dx.doi.org/10.1007/s00410-007-0210-z},
	author = {Perk, N W and Coogan, L A and Karson, J A and Klein, E M and Hanna, H D}
}
