(Table T1) Physical properties of minicores from ODP Leg 193 sites, PACMANUS field

Permeability of the ocean crust is one of the most crucial parameters for constraining submarine fluid flow systems. Active hydrothermal fields are dynamic areas where fluid flow strongly affects the geochemistry and biology of the surrounding environment. There have been few permeability measurements in these regions, especially in felsic-hosted hydrothermal systems. We present a data set of 38 permeability and porosity measurements from the PACMANUS hydrothermal field, an actively venting, felsic hydrothermal field in the eastern Manus Basin. Permeability was measured using a complex transient method on 2.54-cm minicores. Permeability varies greatly between the samples, spanning over five orders of magnitude. Permeability decreases with both depth and decreasing porosity. When the alteration intensity of individual samples is considered, relationships between depth and porosity and permeability become more clearly defined. For incompletely altered samples (defined as >5% fresh rock), permeability and porosity are constant with depth. For completely altered samples (defined as <5% fresh rock), permeability and porosity decrease with depth. On average, the permeability values from the PACMANUS hydrothermal field are greater than those in other submarine environments using similar core-scale laboratory measurements; the average permeability, 4.5 x 10-16 m**2, is two to four orders of magnitude greater than in other areas. Although the core-scale permeability is higher than in other seafloor environments, it is still too low to obtain the fluid velocities observed in the PACMANUS hydrothermal field based on simplified analytical calculations. It is likely that core-scale permeability measurements are not representative of bulk rock permeability of the hydrothermal system overall, and that the latter is predominantly fracture controlled.

(Table T1) Permeability, electrical resistivity and density of ODP Hole 193-1188A and Site 193-1189 minicores, PACMANUS field

Magmatic fluids, heat fluxes, and fluid/rock interactions associated with hydrothermal systems along spreading centers and convergent margins have a significant impact on the genesis of major sulfide deposits and biological communities. Circulation of hydrothermal fluids is one of the most fundamental processes associated with localized mineralization and is controlled by inherent porous and permeable properties of the ocean crust. Heat from magmatic intrusions drives circulation of seawater through permeable portions of the oceanic crust and upper mantle, discharging at the seafloor as both focused high-temperature (250°-400°C) fluids and diffuse lower-temperature (<250°C) fluids. This complex interaction between the circulating hydrothermal fluids and the oceanic basement greatly influences the physical properties and the composition of the crust (Thompson, 1983; Jacobson, 1992, doi:10.1029/91RG02811; Johnson and Semyan, 1994, doi:10.1029/93JB00717). During Ocean Drilling Program (ODP) Leg 193, 13 holes were drilled in the PACMANUS hydrothermal system (Binns, Barriga, Miller, et al., 2002, doi:10.2973/odp.proc.ir.193.2002). The hydrothermal system consists of isolated hydrothermal deposits lined along the main crest of the Pual Ridge, a 500- to 700-m-high felsic neovolcanic ridge in the eastern Manus Basin. The principal drilling targets were the Snowcap (Site 1188) and Roman Ruins (Site 1189) active hydrothermal fields. Samples from these two sites were used for a series of permeability, electrical resistivity, and X-ray computed tomography measurements.

Ley orgánica y reglamentaria de instrucción pública, reformada por los decretos números 3-193-268-295-297-301-312-333-432-445-469-604 y acuerdos gubernativos que figuran al fin.

Mode of access: Internet.

Le novelle antiche dei codici panciatichiano-palatiho 138 e laurenziano-gaddiano 193, con una introduzione sulla storia esterna del testo del Novellino,

Edition of 500 copies.

Direct support and general support maintenance repair parts and special tools lists (including depot maintenance repair parts and special tools lists) : truck, lift, fork, gasoline, pneumatic-tired wheels, 6000-pound capacity Army model MHE 193 NSN 3930-00-738-5938, Baker model FJF-060.

Includes index.

Organizational maintenance manual : truck, lift, fork, gasoline, pneumatic-tired wheels, 6000-pound capacity, Army model MHE-193, Baker model FJF-060, FSN 3930-738-5938.

Includes index.

Operator's manual : truck, lift, fork, gasoline, pneumatic-tired wheels, 6000-pound capacity, Army model MHE-193, Baker model FJF-060 (FSN 3930-738-5938).

"September 1964."

Operator's, organizational, direct support and general support maintenance manual for road equipment, roller, towed, smooth drum, vibratory, air mobile, single drum rumbler SM54A, NSN 3895-01-193-4078.

"29 May 1987."

Unit, direct support, and general support maintenance repair parts and special tools lists : road equipment, towed roller, smooth drum, vibratory, air mobile, single drum, rumbler SM54A (NSN 3895-01-193-4078).

"June 1992."

Operator's, organizational, direct support, and general support maintenance manual : air conditioner, horizontal, compact, 9,000 BTU/hr, 208 volt, three phase 50/60 hertz, model ECU-9HC326, NSN 4120-01-193-4998.

"27 March 1987."

Operator's and unit maintenance manual : truck, firefighting, 1000 GPM multipurpose, model 2500L, NSN 4210-01-193-3621.

"30 October 1987."