Manus

Barite is abundant in back-arc basin hydrothermal system such as Okinawa, Manus and Mariana (Shikazono and Kusakabe, 1999). 

Central Manus Basin Vienna Woods (3° ID S, 150°17 E) 2500 2-km-wide axial rift graben of the northeast spreading center. Mostly massive pillow lava floor. Sulfide chimneys up to 20 m high are venting clear, milky and black fluids. Sulfate smokers are also present. Sphalerite, wurtzite, pyrite, marcasite, chalcopyrite, galena, amorphous silica, barite. Sulfate chimney anhydrite, silica, barite. 

Eastern Manus Basin Desmos cauldron (3 42 S, 151°52 E) 2000 Caldera of basalt/basaltic andesite at an intersection of a spreading center and a transform fault Sulfide ores were not recovered. Megaplume-like methane anomalies in water column over the caldera. Ferruginous oxide deposits. Pyrite and native sulfur disseminated in basaltic andesite. 

Eastern Manus Basin Pacmanus field (3°42 S, 151°42.6 E) 1650 Crest of a prominent ridge of dacite flows and domes called Pual Ridge which exists in pull-apart basin. 4-m-high sulfide chimneys venting smoke (no temperature information). Only one ore chip (1 cm) was recovered. Cohesive anhydrite, chalcopyrite, bomite, tennantite and sphalerite. 

No. Host Axial Seamount CASM 14 B North Fiji Basin 24 B Mariana Trough at 18 N 11 A Valu Fa, Lou Basin 47 B, A, D Eastern Manus Basin 26 D Jade Okinawa Trough 17 R... 

A few REE data on hydrothermal solutions are available (Fig. 2.34). Chondrite normalized REE patterns of hydrothermal solutions from Vienna Wood, Pacmanus and Desmos, Manus Basin exhibit positive Eu anomaly and LREE enrichment are similar to midoceanic ridge solution and Kuroko ore fluids. This positive Eu anomaly (Fig. 2.35) may have been caused by the selective leaking of Eu due to the interaction of an ascending hydrothermal solution and footwall volcanic rocks (Gena et al., 2001). It is interesting to note that altered basaltic andesite has a negative Eu anomaly and this feature is the same as that found in the Kuroko mine area (Shikazono, 1999). 

Site No. Name of site 1 Okinawa Trough JADE 2 Okinawa Trough CLAM 3 Okinawa Trough South Ensei 4 Izu-Bonin Suiyo SM. 5 Mid-Mariana Trough Alice Springs 6 South Mariana Trough Forecast vent 7 Manus Basin Vienna Woods 8 North Fiji Basin 9 Lau Basin Vai Lili... 

Gena et al. (2001) reported advanced argillic alteration of basaltic andesite from the Desmos caldera, Manus back-arc basin which was caused by interaction of hot acid hydrothermal fluid originated from a mixing of magmatic gas and seawater. It is noteworthy that the acid alteration is found in back-arc basins (Manus, Kuroko area) but not in midoceanic ridges. 

N Axial Seamount CASM 14 N. Fiji Basin 24 Mariana Trough at 18°N 11 Valu Fa, Lau Basin 47 Eastern Manus Basin 26 Jade, Okinawa Trough 17... 

Gena, K., Mizuta, T., Ishiyama, D. and Urabe, T. (2001) Acid-sulphate type alteration and mineralization in the Desmos Caldera, Manus Back-arc Basin, Papua New Guinea. Resource Geology, 51, 31 14. 

Meufian Komandosky Kuril Japan Shikoku Okinawa Mariana Parace Vela W. Philippine South China Sulu Celebes Banda Molucca Makassar Andaman Caroline Manus Solomon Woodlark Coral Loyalty North Ril Lau-Havre South Fiji New Caledonia Emerald Tasman... 

As discussed in sections 1.5.3, 2.3 and 2.4.1, the hydrothermal solutions both from back-arc basins and midoceanic ridges are dominantly of seawater origin. Therefore, the fluxes of hydrothermal solution are estimated from seawater cycling rate. This rate is considered to be equal to oceanic production rate times seawater/rock ratio. Kaiho and Saito (1994) estimated the crustal production rate at back-arc basins (Okinawa, Mariana, Andaman, Manus, Woodlark, North Fiji, Lau-Havre, East Scotia and Cayman) based on the spreading rate, thickness of crust and length of ridge axis. Their estimated oceanic crustal production rate is 8.5 x 10 km /m.y. which is roughly equal to 2.5 x lO g/m.y. 

Lane, J. and Manus, D., Persistent cardiovascular effects with repested caffeine administration. Psychosomatic Medicine 51, 373-380, 1989. 

Each time I heard the bolts drawn back I would pray, Deo, in manus tuas. It was weeks before I realized that it would not be thus. For an hour or two I hoped. And then I understood that I would still die, and that it no longer mattered if it were known, for there was no man with the power or the will to protest, or to do Prince Richard, Duke of Gloucester, harm in revenge. 

Fitzgerald, J.M., Boyd, VF. and Manus, A.G. (1983). Formulations of insoluble and immiscible test agents in liquid vehicles for toxicity testing. In Chemistry for Toxicity Testing (Jameson, C.W. and Walters, D.B., Eds.). Butterworth, Boston, pp. 83-90. 

Mac Manus JP, Graber T, Luebbert G, Preston E, Rasquinha I, et al. 2004. Translation-state analysis of gene expression in mouse brain after focal ischemia. J Gereb Blood Flow Metab 24 657. 

Wang, C. and Manus-Zloczower, I., Flow Field Analysis of a Cavity Transfer Mixer, Polym. Eng. ScL, 34, 1224 (1994)... 

Huang, M.E. Manus, V. Chuat, J.C. Galibert, R Analysis of a 62 kb DNA sequence of chromosome X reveals 36 open reading frames and a gene cluster with a counterpart on chromosome XI. Yeast, 12, 869-875 (1996)... 

The milk lipase system is reported to be activated by mercuric chloride. Raw milk preserved with corrosive sublimate sometimes contains a much larger concentration of free fatty acids that do unpreserved samples. Pasteurized milk preserved in a similar fashion does not show an increase in free fatty acids (Manus and Bendixen 1956). 

Lipolytic action has been observed to occur in composite samples preserved with mercuric chloride and has decreased the reading of the Babcock test as much as 0.15% (Manus and Bendixen 1956). 

Manus, L. J. and Bendixen, H. A. 1956. Effects of lipolytic activity and of mercuric chloride on the Babcock test for fat in composite milk samples. J. Dairy Sci. 39 508-513. 

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