Antitumor Polyether Macrolides:  New and Hemisynthetic Halichondrins from the New Zealand Deep-Water SpongeLissodendoryxsp.

1997 ◽  
Vol 62 (6) ◽  
pp. 1868-1871 ◽  
Author(s):  
Marc Litaudon ◽  
Sarah J. H. Hickford ◽  
Rachel E. Lill ◽  
Robin J. Lake ◽  
John W. Blunt ◽  
...  
Keyword(s):  
New Zealand ◽  
Deep Water ◽  
Polyether Macrolides

scholarly journals Regional Seismic Attribute Analysis and Tectono-Stratigraphy of Offshore South-Western Taranaki Basin, New Zealand

2021 ◽  
Author(s):  
◽  
Jan Robert Baur
Keyword(s):  
New Zealand ◽  
Deep Water ◽  
Middle Miocene ◽  
Plate Boundary ◽  
Water Area ◽  
Passive Margin ◽  
Extensional Faulting ◽  
Deep Water Area ◽  
Back Arc ◽  
Shelf Margin

<p>This study investigates the nature, origin, and distribution of Cretaceous to Recent sediment fill in the offshore Taranaki Basin, western New Zealand. Seismic attributes and horizon interpretations on 30,000 km of 2D seismic reflection profiles and three 3D seismic surveys (3,000 km²) are used to image depositional systems and reconstruct paleogeography in detail and regionally, across a total area of ~100,000 km² from the basin's present-day inner shelf to deep water. These data are used to infer the influence of crustal tectonics and mantle dynamics on the development of depocentres and depositional pathways. During the Cretaceous to Eocene period the basin evolved from two separate rifts into a single broad passive margin. Extensional faulting ceased before 85 Ma in the present-day deep-water area of the southern New Caledonia Trough, but stretching of the lithosphere was higher (β=1.5-2) than in the proximal basin (β<1.5), where faulting continued into the Paleocene (~60 Ma). The resulting differential thermal subsidence caused northward tilting of the basin and influenced the distribution of sedimentary facies in the proximal basin. Attribute maps delineate the distribution of the basin's main petroleum source and reservoir facies, from a ~20,000 km²-wide, Late Cretaceous coastal plain across the present-day deep-water area, to transgressive shoreline belts and coastal plains in the proximal basin. Rapid subsidence began in the Oligocene and the development of a foredeep wedge through flexural loading of the eastern boundary of Taranaki Basin is tracked through the Middle Miocene. Total shortening within the basin was minor (5-8%) and slip was mostly accommodated on the basin-bounding Taranaki Fault Zone, which detached the basin from much greater Miocene plate boundary deformation further east. The imaging of turbidite facies and channels associated with the rapidly outbuilding shelf margin wedge illustrates the development of large axial drainage systems that transported sediment over hundreds of kilometres from the shelf to the deep-water basin since the Middle Miocene. Since the latest Miocene, south-eastern Taranaki Basin evolved from a compressional foreland to an extensional (proto-back-arc) basin. This structural evolution is characterised by: 1) cessation of intra-basinal thrusting by 7-5 Ma, 2) up to 700 m of rapid (>1000 m/my) tectonic subsidence in 100-200 km-wide, sub-circular depocentres between 6-4 Ma (without significant upper-crustal faulting), and 3) extensional faulting since 3.5-3 Ma. The rapid subsidence in the east caused the drastic modification of shelf margin geometry and sediment dispersal directions. Time and space scales of this subsidence point to lithospheric or asthenospheric mantle modification, which may be a characteristic process during back-arc basin development. Unusual downward vertical crustal movements of >1 km, as inferred from seismic facies, paleobathymetry and tectonic subsidence analysis, have created the present-day Deepwater Taranaki Basin physiography, but are not adequately explained by simple rift models. It is proposed that the distal basin, and perhaps even the more proximal Taranaki Paleogene passive margin, were substantially modified by mantle processes related to the initiation of subduction on the fledgling Australia-Pacific plate boundary north of New Zealand in the Eocene.</p>

ECOLOGICAL DISTRIBUTION OF RECENT DEEP-WATER FORAMINIFERA AROUND NEW ZEALAND

2013 ◽  
Vol 43 (4) ◽  
pp. 415-442 ◽  
Author(s):  
B. W. Hayward ◽  
A. T. Sabaa ◽  
H. R. Grenfell ◽  
H. Neil ◽  
H. Bostock
Keyword(s):  
New Zealand ◽  
Deep Water ◽  
Ecological Distribution

Damnaster tasmani, a new genus and species of Asteoidea (Echinodermata) from New Zealand

1994 ◽  
Vol 8 (6) ◽  
pp. 1397 ◽  
Author(s):  
HES Clark ◽  
DG McKnight
Keyword(s):  
New Zealand ◽  
Deep Water ◽  
New Genus ◽  
New Genus And Species ◽  
The West

Damnaster tasmani, gen. et sp. nov., belonging in the deep-water asteroid family Porcellanasteridae, is described from five stations (nine specimens) to the west of New Zealand, between 35° and 46° S, 156° and 167° E, in depths of 1647 - 4868 m.

A revised definition of the genus Epileucon Jones (Crustacea, Cumacea) with descriptions of species from the deep Atlantic

1981 ◽  
Vol 291 (1052) ◽  
pp. 353-409 ◽  
Keyword(s):  
New Species ◽  
New Zealand ◽  
Continental Shelf ◽  
Mediterranean Sea ◽  
Geographical Distribution ◽  
Deep Water ◽  
Mediterranean Species ◽  
Males And Females ◽  
The Mediterranean ◽  
Definition Of

The genus Epileucon Jones, 1956 is redefined on the basis of carapace, pereon and appendage characters. The following species are transferred to Epileucon from the genus Leucon Kröyer, 1846: E. spiniventris (Hansen, 1920), E. longirostris (G. O. Sars, 1871), E. tenuirostris (G. O. Sars, 1887), E. latispina (Jones, 1963) and E. bengalensis (Lomakina, 1967). A lectotype is selected for E. spiniventris . Known Atlantic and Mediterranean species are redescribed, and five new species, E. ensis, E. pusillus, E. craterus, E. socius and E. acclivis , are described. Keys to males and females of the Atlantic and Mediterranean species are provided. The geographical distribution of the group is discussed. The genus is known in deep water (> 200 m) in the Atlantic, Pacific and Indian oceans and in the Mediterranean Sea, and also on the continental shelf (at around 100 m depth) off New Zealand.

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