OLR (I 985) 32 (9) D. Submarine Geology and Geophysics 745

surveys of the southern edge of the Barbados Ridge complex (11°45 "N-13°05 "N) and the Tiburon Rise (14°50"N-15°45"N) demonstrates the importance of 'downgoing plate structures in the evolution of an accretionary wedge.' The structural grain of the area north of 12°40"N reflects the influence of E-W shortening of a thick sediment pile; a major decollement at the base of the wedge seems prob- able. Topographic irregularities in the underthrust- ing plate appear to cause changes in the trend of morphometric axes south of 15°N. Inst. de Geol. du Bassin d'Aquitaine, Univ. de Bordeaux I, 351 tours de la Liberation, 33405 Talence Cedex, France. (hbf)

85:5069 Garcia, Luis, 1982. [Study of the morphology and

sediments of the continental shelf between Cabo San Lorenzo and Punta Jama, Ecuador.] Revta Cienc. Mar Limnol~ Guayaquil, 1(2):165-190. (In Spanish, English abstract.)

Coastal morphology was varied with a wide and smooth shelf in the north and a narrow and steep shelf to the south. Most sediment samples were silty; sediments were poorly sorted, asymmetric, tending to fine particles and platikurtic. CaCO 3 content ranged 1.42-88.66%; sediments having less than 10% CaCO 3 were related to silts, those with more than 30% CaCO 3 were definitely sandy. The outer shelf is mostly sandy and calcareous. Inst. Nac. de Pesca, Casilla 5918, Guayaquil, Ecuador.

85:5070 Granja, Helena, J.-M. Froidefond and Teresa Pera,

1984. Morpho-sedimentary evolution process of the Rla Formosa coastal lagoon (Portugal). Bull. Inst. G~ol. Bassin Aquitaine, 36:37-50. (In French, English abstract.) Rua Joao das Regras, 255 - 4000, Porto, Portugal.

85:5071 Lallemand, Serge, J.-P. Mazr, Serge Monti and J.-C.

Sibuet, 1985. New bathymetric map of the northeast Atlantic Ocean. C. r. Acad. Sci., Paris, (Srr. II)300(4):145-149. (In French, English abstract.)

The work on a new bathymetric compilation in the northeast Atlantic based on available conventional data and all Seabeam data acquired by the R.V. Jean Chareot is described, and a reduced version of the chart reproduced. Lab. de Geol. dynam., Univ. d'Orleans, 45046 Orleans Cedex, France.

85:5072 Larue, D.K., 1985. Quartzose turbidites of the

accretionary complex of Barbados. II. Variations in bedding styles, facies and sequences. Sedim.

Geol~ 42(3-4):217-253. Dept. of Geol., Stanford Univ., Stanford, CA 94305, USA.

85:5073 Sibuet, J.-C., Benoit Mathis and Peter Hunter, 1984.

The Pastouret Ridge (Porcupine Abyssal Plain): a n Eocene structure. C. r. Acad. Sci~ Paris, (S~r. II)299(20):1391-1396. (In French, English ab- stract.)

Seabeam data were used to construct a new bath- ymetric map for the Goban Spur continental margin (SW Ireland). Pastouret Ridge (a new feature which is a reactivated oceanic fracture zone) shows evi- dence of Eocene intraplate deformation. Centre Oceanol. de Bretagne, B.P. no. 337, 29273 Brest Cedex, France. (lit)

85:5074 Smoot, N.C. and Allen Lowrie, 1985. Emperor

Fracture Zone morphology by multi-beam sonar. J. Geol., 93(2):196-204.

Multi-beam swath-mapping sonar bathymetry and navigational satellite data provide a detailed mor- phology of the Emperor Fracture Zone (EFZ), which lies between the Emperor Seamount Chain and the Gulf of Alaska. It is concluded that 'the EFZ may have been a slowly opening, oblique ridge that is inactive at present.' Each of its 3 principal secondary segments includes pull-apart basins. The most complex bathymetry occurs at the intersection of the EFZ and the Chinook Fracture Zone. The signif- icance and applicability of the term fracture zone and trough are considered by way of introduction. Bathy. Div., Naval Oceanogr. Office, NSTL, MS 39522, USA. (hbf)

85:5075 Wang, Lishun, Jianzhang Xu and Peimin Ding,

1985. Discussion on the sedimentary character- istics and environment of the Paleogene in the southern Yellow Sea basin. Mar. Geol. Quat. Geol., 5(0:39-46. (In Chinese, English abstract.) Res. Party of Mar. Geol., Bur. of Mar. Geol. Invest., Min. of Geol. and Min. Res., People's Republic of China.

DS0. Subsurface structure

85:5076 Mart, Yossi and P.D. Rabinowitz, 1984. Possible

diapirs in the Gulf of Elat, southern Dead Sea Rift. Geo-Marine Lefts, 4(2):63-67.

It is believed that the diapiric structures in the southern Gulf of Elat are of salt origin and are part