The New Guinea region evolved within the obliquely and rapidly converging Australian Pacific plate boundary zone. It is arguably one of most tectonically complex regions world, its geodynamic evolution involved microplate formation rotation, lithospheric rupture to form ocean basins, arc-continent collision, subduction polarity reversal, collisional orogenesis, ophiolite obduction, exhumation (ultra)high-pressure metamorphic rocks. We describe major onshore offshore tectonic geologic...

Over the last decade major progress has been made in developing both theoretical and practical aspects of apatite (U–Th)/He thermochronometry it is now standard practice, generally seen as best to analyse single grain aliquots. These individual prismatic crystals are often broken fragments larger that have during mineral separation along weak basal cleavage apatite. This clearly indicated by common occurrence only 1 or no clear crystal terminations present on separated grains, evidence...

Apatite fission track thermochronology (AFTT) on granitic samples collected in the central Alaska Range conjunction with geologic constraints from basins to north (Nenana Basin) and south (Cook Inlet) of range is used constrain timing, amount, rate, pattern surface uplift, rock denudation since late Miocene. The conversion a thermal frame reference (apatite data) an absolute (with respect mean sea level), which requires constraining paleoland elevation, paleomean annual temperature,...

A VARIETY of neurologic disorders are associated with different forms cancer.1 2 3 4 5 6 7 Secondary effects that become manifest in the absence metastasis collectively called paraneoplastic phenomena, and they include rapid loss sight.8 9 10 11 There have been several published reports central nervous system autoantibodies patients cancer, primarily small-cell carcinoma lung neuropathies.12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 We previously described30 high titers serum...

A fission track study of the Transantarctic Mountains (TAM) in Granite Harbour and Wilson Piedmont Glacier areas southern Victoria Land reveals information on timing uplift, amount uplift erosion, structure mountains, especially onshore Mountain Front (TAM Front), which represents boundary between East West Antarctica. Apatite ages are < 175 Ma represent a thermal regime established after heating accompanying Jurassic magmatism. An apatite age profile from Mount England records break...

Abstract Since the first discovery of ultrahigh pressure (UHP) rocks 30 years ago in Western Alps, mechanisms for exhumation (U)HP terranes worldwide are still debated. In western Mediterranean, presently accepted model synconvergent (e.g., channel‐flow model) is conflict with parts geologic record. We synthesize regional data and present alternative that consider role divergence within subduction zones. These mechanisms, i.e., (i) motion upper plate away from trench (ii) rollback lower...

ABSTRACT The cells of the eye lens contain type III intermediate filament protein vimentin, as well two other proteins, CP49 and filensin. These proteins appear to be unique differentiated fibre cell. Immunoblotting confocal microscopy were used describe changes which occur in these three networks they form during cell differentiation maturation. vimentin network was present both epithelial some cells. Fibre positive up a specific point 2-3 mm from capsule where signal drastically reduced....

Built upon the roots of a compressive orogenic belt late Proterozoic‐early Paleozoic age and once adjacent to North America, present‐day Transantarctic Mountains (TAM) represent rift flank, resulting from episodic uplift in Cretaceous Cenozoic. Fault blocks are discernible topography subglacial morphology. Fission track results give information on differential block movement (uplift denudation) important constraining models for range. Apatite fission thermochronology samples collected...

40Ar/39Ar, apatite fission-track, and (U-Th)/He thermochronological techniques were used to determine the Neogene exhumation history of topographically asymmetric eastern Alaska Range. Exhumation cooling ages range from ∼33 Ma ∼18 for 40Ar/39Ar biotite, ∼6 K-feldspar minimum closure ages, ∼15 ∼1 fission-track ∼4 Ma. There has been at least ∼11 km adjacent north side Denali fault during inferred biotite thermochronology. Variations in along across strike are influenced by both far-field...

Abstract The D'Entrecasteaux Islands of south‐eastern Papua New Guinea are active metamorphic core complexes that formed within a region where the plate tectonic regime has transitioned from subduction to rifting. While rapid, post 4 Myr exhumation and cooling amphibolite greenschist facies rocks constitute footwall crustal scale detachment fault system have been previously documented on Fergusson Goodenough chain, timing eclogite metamorphism in was unknown. Recent work revealed at least...

The syntectonic continental conglomerates of the South-Central Pyrenees record late stages thin-skinned transport South-Pyrenean Central Units and onset exhumation Pyrenean Axial Zone (AZ) in core orogen. New magnetostratigraphic data these have established their age as Late Lutetian to Oligocene. reveal that materials were deposited during intense periods tectonic activity chain not cessation deformation considered previously. ages been combined with new detrital apatite fission track (AFT)...

The Woodlark Rift of southeastern Papua New Guinea is among the fastest evolving plate boundaries on Earth. Rapid extension led to formation metamorphic core complexes ahead westward-propagating basin spreading center, but it unknown whether all are still active. We assess spatial pattern and recent history rock surface uplift in subaerial portion using stream profile analyses D'Entrecasteaux Islands eastern Papuan Peninsula. Most profiles characterized by prominent convexities, or...

Apatite fission track thermochronology utilizing vertical sampling profiles, with results interpreted using the concept of exhumed partial annealing zones, is applied in Scott Glacier area (86°S) Transantarctic Mountains (TAM). Patterns age profiles indicate that episodes denudation Early Cretaceous, Late and Cenozoic were separated by periods relative tectonic stability. Thermal modeling time‐temperature histories compared to observed data indicates commenced at ∼125 Ma, ∼95 50–45 Ma....

Apatite fission track thermochronologic results from transects across the Basin and Range Transition Zone provinces in west central Arizona provide constraints on denudational history structural framework of region. ages decrease ∼21 to 14 Ma Harcuvar Mountains ∼16 13 Buckskin‐Rawhide slip direction (SW ‐ NE) detachment faults lower plates metamorphic core complexes. Mean lengths confined tracks complexes are all >14 μm, indicating that apparent apatite record rapid cooling through...