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Guinea fracture zone in the equatorial Atlantic
t056
Oceanographic Abstracts
Glutamate causes vaterite and calcite to precipitate; lactate, chondroitinsulfate, succinate, and argininc favor calcite formation; glycine and serine favor vaterite and aragonite to precipitate; and taurine causes argonite to precipitate. The compounds galactose, dextrose, alanine, and acetate have little effect on the rate of formation and do not influence the forms precipitated. No correlation was found between the crystal type o f calcium carbonate in marine sediments and the crystal type of calcium carbonate formed from bicarbonate solution containing organic matrix material isolated from tl~: skeletal parts o f the marine samples. KORNICKER Louis S. and CHARLI:SE. KIN(;, t965. A new species of luminescent Ostracoda fro~ Jamaica, West Indies. Micropaleontology, I1 {I): 105-110. A new species of luminescent Ostracoda belonging to the genus Vargtt[a is described fi'om 1,o~ Bay, Manchioneal, Jamaica. KRAMER JAMES R., 1964. Sea water : saturation with apatites carbonates. Scienc'e. 146 (364t. 637-638. Pacific Ocean water, on the average, appears to be slightly supersaturated at all tcnrperatures wiii~ hydroxyapatite and carbonate fluorapatite. Water above 14">C is saturated with calcite, wheress water above 20'~C is saturated with aragonite. KRAUSE D~t I~ ('., t964. Guinea fracture zone in the equatorial Atlantic. S{it, ll{'e, 146 (3(~40i 57 59. The east-west Guinea fracture zone is situated off Sierra Leone, West Africa. The estimated Iopographic left lateral displacement is about 230 kilometers. This fracture zone is the eastern analog o f the Vema fracture zone, with its associated troughs, and of the Barracuda Fault. The Guinea fracture zone marks the northern boundary on the African coast of a wide zone of left lateral shear in the equatorial Atlantic KRAUSE DAI-.~ (-., 1965. Submarine geology north of New Guinea. Geol. Soc. ~t~t. t3ttll., 76 I I i: 27 -42. A bathymetric chart of the sea floor north of New Guinea between 129: and 140' W. long, ~as constructed, based on soundings of the RECORDER Expedition of August 1961 and other soundings. published and unpublished. The tectonic features of the sea floor can be correlated with features in northern New Guinea, especially : (1) a north-south deformational zone which lies north and wesl of Mapia Islands and links tectonic features in New Guinea to those near the Palau Islands; (2) an east-southeast trend paralleling the north coast of New Guinea; (3) east-west troughs, especially well developed near the equator: and (4) other minor trends. A major left-lateral shear zone mtt~ extend the length o f New Guinea. Three major periods o f deformation have been Cretaceou~ Eocene, between Miocene and Pliocene, and Quaternary. The geologic history of northern Ne~ Guinea is similar to that of the Darwin Rise. KRINSLEY DAVID, TARO TAKAHASHI, M. L. SILBERMANand WALXER S. NEWMAN, 1964. lran~portation of sand grains along the Atlantic shore of Long Island, New York : an application t~f electron microscopy. Mat'. Geology, 2 (I/2): 100-120. At least 500 sections of surface replicas prepared fTom 45 sand grains collected along the Atlantic shore of Long Island, New York, between Montauk Point and East Hampton were examined by electron microscopy at magnifications of about ~< 5,000. The samples from the Montauk till and the beach adjacent to it at Montauk Point exhibited characteristic glacial textures. The samples from beaches further west indicated that glacial textures were progressively replaced by beach textures. Glacial textures were largely obliterated but could still be observed on grains from the beach at East Hampton, 20 miles west of Montauk Point. This result essentially confirms TANEV'S (1961a~ conclusion that the Montauk till exposed along the eastermost 4 miles of Long Island is the major source o f beach deposits on the Atlantic shore o f the island. Assuming that the V-shaped patterns represent indentations formed by collisions, two equatio~ls relating the density of V-shaped patterns per square micron and the transportation distance were developed by using two environmental models. The development of beach textures superimposed upon original glacial textures was reproduced in the laboratory by subjecting the Montauk tilt ~{~ rotary motion in a shaking table KRUGER P. and A. MILLER, 1964. Radiochemical fallout study of a Pacific cyionic s t o r m . . t
geophys. Res., 69 (8): 1469-1480. A meteorological analysis of the storm which occurred on February 7, 1962, at Santa Barbara, California, was made in conjunction with radiochemical analysis of precipitation collected continuously at altitudes of sea level, 600 m and 1200 rn. The sampling period included the approach toward the coast and passage of one wave and the approach o f a second wave. The three altitudes exhibited similar Sr 9° deposition patterns. Concentrations ranged from over 100 dpm/I to less than 1 dpm/l, with several changes of more than a factor o f 10 within hourly periods. The large variations of Sr 90 concentration in the precipitation at the three altitudes may be linked to atmospheric changes during the storm. Such effects as saturation o f the lower layers of air, overturning of the marine layer, approaches of the frontal and tipper trough zones, vertical growth o f the cloud system up t~'.
Oceanographic Abstracts
Glutamate causes vaterite and calcite to precipitate; lactate, chondroitinsulfate, succinate, and argininc favor calcite formation; glycine and serine favor vaterite and aragonite to precipitate; and taurine causes argonite to precipitate. The compounds galactose, dextrose, alanine, and acetate have little effect on the rate of formation and do not influence the forms precipitated. No correlation was found between the crystal type o f calcium carbonate in marine sediments and the crystal type of calcium carbonate formed from bicarbonate solution containing organic matrix material isolated from tl~: skeletal parts o f the marine samples. KORNICKER Louis S. and CHARLI:SE. KIN(;, t965. A new species of luminescent Ostracoda fro~ Jamaica, West Indies. Micropaleontology, I1 {I): 105-110. A new species of luminescent Ostracoda belonging to the genus Vargtt[a is described fi'om 1,o~ Bay, Manchioneal, Jamaica. KRAMER JAMES R., 1964. Sea water : saturation with apatites carbonates. Scienc'e. 146 (364t. 637-638. Pacific Ocean water, on the average, appears to be slightly supersaturated at all tcnrperatures wiii~ hydroxyapatite and carbonate fluorapatite. Water above 14">C is saturated with calcite, wheress water above 20'~C is saturated with aragonite. KRAUSE D~t I~ ('., t964. Guinea fracture zone in the equatorial Atlantic. S{it, ll{'e, 146 (3(~40i 57 59. The east-west Guinea fracture zone is situated off Sierra Leone, West Africa. The estimated Iopographic left lateral displacement is about 230 kilometers. This fracture zone is the eastern analog o f the Vema fracture zone, with its associated troughs, and of the Barracuda Fault. The Guinea fracture zone marks the northern boundary on the African coast of a wide zone of left lateral shear in the equatorial Atlantic KRAUSE DAI-.~ (-., 1965. Submarine geology north of New Guinea. Geol. Soc. ~t~t. t3ttll., 76 I I i: 27 -42. A bathymetric chart of the sea floor north of New Guinea between 129: and 140' W. long, ~as constructed, based on soundings of the RECORDER Expedition of August 1961 and other soundings. published and unpublished. The tectonic features of the sea floor can be correlated with features in northern New Guinea, especially : (1) a north-south deformational zone which lies north and wesl of Mapia Islands and links tectonic features in New Guinea to those near the Palau Islands; (2) an east-southeast trend paralleling the north coast of New Guinea; (3) east-west troughs, especially well developed near the equator: and (4) other minor trends. A major left-lateral shear zone mtt~ extend the length o f New Guinea. Three major periods o f deformation have been Cretaceou~ Eocene, between Miocene and Pliocene, and Quaternary. The geologic history of northern Ne~ Guinea is similar to that of the Darwin Rise. KRINSLEY DAVID, TARO TAKAHASHI, M. L. SILBERMANand WALXER S. NEWMAN, 1964. lran~portation of sand grains along the Atlantic shore of Long Island, New York : an application t~f electron microscopy. Mat'. Geology, 2 (I/2): 100-120. At least 500 sections of surface replicas prepared fTom 45 sand grains collected along the Atlantic shore of Long Island, New York, between Montauk Point and East Hampton were examined by electron microscopy at magnifications of about ~< 5,000. The samples from the Montauk till and the beach adjacent to it at Montauk Point exhibited characteristic glacial textures. The samples from beaches further west indicated that glacial textures were progressively replaced by beach textures. Glacial textures were largely obliterated but could still be observed on grains from the beach at East Hampton, 20 miles west of Montauk Point. This result essentially confirms TANEV'S (1961a~ conclusion that the Montauk till exposed along the eastermost 4 miles of Long Island is the major source o f beach deposits on the Atlantic shore o f the island. Assuming that the V-shaped patterns represent indentations formed by collisions, two equatio~ls relating the density of V-shaped patterns per square micron and the transportation distance were developed by using two environmental models. The development of beach textures superimposed upon original glacial textures was reproduced in the laboratory by subjecting the Montauk tilt ~{~ rotary motion in a shaking table KRUGER P. and A. MILLER, 1964. Radiochemical fallout study of a Pacific cyionic s t o r m . . t
geophys. Res., 69 (8): 1469-1480. A meteorological analysis of the storm which occurred on February 7, 1962, at Santa Barbara, California, was made in conjunction with radiochemical analysis of precipitation collected continuously at altitudes of sea level, 600 m and 1200 rn. The sampling period included the approach toward the coast and passage of one wave and the approach o f a second wave. The three altitudes exhibited similar Sr 9° deposition patterns. Concentrations ranged from over 100 dpm/I to less than 1 dpm/l, with several changes of more than a factor o f 10 within hourly periods. The large variations of Sr 90 concentration in the precipitation at the three altitudes may be linked to atmospheric changes during the storm. Such effects as saturation o f the lower layers of air, overturning of the marine layer, approaches of the frontal and tipper trough zones, vertical growth o f the cloud system up t~'.