Estimation of current plate motions in Papua New Guinea
12,182 TREGONING ET AL.: PAPUA NEW GUINEA PLATE MOTIONS FROM GPS -- 0 o Guinea CAROLINE PLATE 150OE NORTH BISMARC•• Bisma•k PLATE SOUTH BISMARCK PLATE WF SOLOMON SEA PLATE •IOODLARK •} PLATE FI WI --10os AUSTRALIAN PLATE Woodlark Basin Spreading Centre 0 I, PACIFIC PLATE Bougainville Basin I 160OE 1 510 øE
Trobriand plate
Within the Trobriand plate is the unigue to today''s earth, the youngest (7–5 million year old) metamorphic core complexes formed of sedimentary rocks that have been subject to high and ultra–high–pressure, as well as gneissic domes that are being rapid emplaced at between 1–2 cm/year (0.39–0.79 in/year) vertically. [4] [2] The metamorphic core complexes include the
Density Structure of the Papua New Guinea-Solomon Arc
system under the constraints of the CRUST1.0 global crustal model, onshore seismic data, and the LLNL-G3Dv3 global P-wave velocity role in plate subduction. Key words Papua New Guinea-Solomon; plate subduction; gravity anomaly; density structure; genetic algorithm 1 Introduction The PN-SL subduction system is located in the South-
Bohol fault system
The Bohol fault system is a reverse fault system in Bohol province, Philippines. This fault system contains three segments: the newly found North Bohol Fault following the 2013 Bohol earthquake, [2] the South Offshore Fault, [3] and the East Bohol Fault.. The North Bohol Fault is located in Inabanga and near Clarin.The South Offshore Fault affects the southern towns, while the East
The Manokwari Trough and the western end of the New Guinea Trench
The New Guinea Trench is a sparsely surveyed seafloor depression which runs parallel to the north coast of New Guinea for a distance of some 700 km. Its western end lies about 600 km east of the Phil...
BTI 2024 Guinea Country Report
Guinea is one of the poorest countries in the world, despite having the second-largest bauxite reserves in the world and the world''s highest-grade iron ore, in addition to substantial diamond and gold resources. It was ranked 182nd out
Evidence for active subduction at the New Guinea Trench
[1] Recent seismic tomography imaging shows clear evidence for southwestward subduction along the entire length of the New Guinea Trench (NGT) in Indonesia and Papua New Guinea. Viewed in conjunction with the occurrence of large (M w > 7) thrust earthquakes that are known to have occurred on the trench, this confirms conclusions of earlier studies that the
A New Geological Map of the Marginal Basins of Eastern Papua New Guinea
The major successor basins are: (1) the Eastern Papuan and Aure-Moresby Fold and Thrust Belt with 1.5 km of marine sediment extending onshore and offshore [14, 85]; (2) the Sepik–Ramu Basin, which has flooded the West Bismarck arc and backarc system and shed debris into the New Guinea Basin ; (3) sediment from the Ramu-Markham Fault, which is
Estimation of current plate motions in Papua New Guinea from
Plate tectonic motions have been estimated in Papua New Guinea from a 20 station network of Global Positioning System sites that has been observed over five campaigns from 1990 to 1996.
Dynamic processes of upper plate deformation at the New Guinea
The interactions between arc-continent collision and subduction zones are still poorly understood. Here, we use 2D seismic data to document upper plate deformational features and identify different structural styles along the New Guinea Trench, western Pacific, and discuss their broader significance. In the western section, normal faults and negative flower structures occur
Evidence for active subduction at the New Guinea Trench
New Guinea and eastern Indonesia. Available CMT focal mechanisms (M w > 7) are plotted for events located reliably on the New Guinea Trench (plus the 1979 Yapen strike-slip event). Lines in yellow indicate surface traces of tomo-graphic cross-sections (see Figure 3). AP: Australian Plate; BSSL: Bismarck Sea Seismic Lineation; CP: Caroline Plate;
Geochemistry and mineralogy of the sediments in the New Britain
The tectonically-active, steep mountainous terrain, and extremely high rainfall rates in Papua New Guinea (PNG) lead to strong erosion, high runoff and large sediment yields, which renders it a critical component of the global sediment source-to-sink system (Milliman, 1995; Milliman et al., 1999). For example, Markham and Sepik rivers supply a
New Insights into the present-day kinematics of the central and
In northwestern New Guinea, the main structural units accommodating the AUST–PACI convergence are the left-lateral strike-slip motion on an E-W fault system associated with the BSSL and the New Guinea Trench, where the Pacific Plate subducts beneath continental PNG (Fig. 1). Further to the east, the Ramu-Markham fault zone (RMFZ) and the New
Webb Fontaine implements GUCEG in Guinea to
The Single Window system is set to transform the way trade is conducted in the country, securing government revenues and fostering economic growth. The collaborative efforts of the Ministry of Budget and Webb Fontaine
Kilinailau Trench
The Kilinailau Trench is an oceanic trench delineating the former oceanic crust boundary between the Pacific Plate and the now inactive North Bismarck Plate, in the area to the west of Papua New Guinea. [1] [2] To its south west is the inactive North Solomon Trench.The collision of the Ontong Java Plateau in the then subducting oceanic crust of the Pacific Plate, initially to the trench''s
The relationship between the nature of margins and the
The relationship between the nature of margins and the subduction of oceanic plateaus: Insights from variations in the forearc basement and sediments along the New Guinea Trench in the West Pacific Tectonophysics ( IF 2.7) Pub Date : 2024-02-08, DOI: 10.1016/j.tecto.2024.230235
Teleseismic P-Wave Tomography of the New Guinea-Solomon Arc System
The mountain system in Papua New Guinea (PNG) is growing by accretion of Australian margin strata to the front of the Papuan fold-and-thrust belt in the south and by accretion of exotic terranes
Post 8 Ma reconstruction of Papua New Guinea and Solomon
Papua New Guinea and the Solomon Islands are located in a complex tectonic setting between the converging Ontong Java Plateau on the Pacific plate and the Australian continent. Here we present a Late Neogene to Quaternary plate tectonic reconstruction for this region. The reconstruction was performed using GPlates software and is based on data
Density Structure of the Papua New Guinea-Solomon Arc Subduction System
The Papua New Guinea-Solomon (PN-SL) arc is one of the regions with active crustal motions and strong geological actions. Thus, its complex subduction system makes it an ideal laboratory for
Solomon Sea plate
The tectonic regime in this part of the world is extremely complex and involves a number of minor as well as major plates. The Solomon Sea plate is an oceanic crustal plate remnant which is likely disappearing into three subduction zones, to its north, east and west. [4] Its southeast margin runs along the Woodlark Rise, which extends into a transform fault called the Nubara Transform
3-D Plate Tectonic Reconstructions of New Guinea Since the Triassic
An Outer Melanesian Arc system now developed from New Guinea to Tonga and a young marginal sea began to form on the east side of the New Caledonia—Norfolk Ridge. The major event, however, was
Tectonic setting of the Papua New Guinea region. Topography
New Guinea (PNG) is one of the most tectonically complex regions in the world, involving microblocks rotating rapidly about nearby poles. The general tectonic framework of this region ( Fig. 1
West Melanesian Trench
The West Melanesian Trench [1] (previously known as Manus Trench) [2] is an oceanic trench in the Bismarck Sea north of Papua New Guinea delineating the plate tectonic boundary between the Caroline and North Bismarck plates. [3]There is only slight seismic activity along both the trench, and its status as an active subduction zone, as proposed in the 2003 general model of
Dynamic processes of upper plate deformation at the New Guinea
The subduction system experienced four tectonic evolutionary stages: (1) initial subduction (~22–20 Ma): the Eurasian Plate began to subduct beneath the Philippine Sea Plate, and the incipient
Caroline plate
The Caroline plate is a minor tectonic plate that straddles the Equator in the eastern hemisphere located north of New Guinea forms a subduction zone along the border with the Bird''s Head plate and other minor plates of the New Guinea region to the south. A transform boundary forms the northern border with the Pacific plate.Along the border with the Philippine Sea plate is a
Evidence for active subduction at the New Guinea
The New Guinea region in the western Pacific is a typical example of global arc-continent collision (e.g., Hall, 1997Hall,, 2002Wallace et al., 2004) and has been affected by a series of orogenic