Refine
Year of publication
Language
- English (43)
Is part of the Bibliography
- yes (43)
Keywords
- erosion (3)
- Be-10 (2)
- Central Pontides (2)
- cosmogenic nuclides (2)
- landscape evolution (2)
- paleoaltimetry (2)
- stable isotopes (2)
- thermochronology (2)
- Adana Basin (1)
- African Humid Period (1)
- Alborz Mountains (1)
- Anatolia westward motion (1)
- Anatolian plateau (1)
- Andes (1)
- Arabia-Eurasia collision (1)
- Baragoi (1)
- Be-10 depth-profiles (1)
- Black Sea (1)
- Central Anatolia (1)
- Central Anatolian Plateau (1)
- Central Anatolian plateau (1)
- Central Andes (1)
- Coral reef terraces (1)
- Drainage morphometry (1)
- Eastern Cordillera (1)
- Eratosthenes Seamount (1)
- Fluvial Incision (1)
- Hellenic trench (1)
- Humahuaca Basin (1)
- Indian Summer Monsoon (1)
- Indonesia (1)
- Iran (1)
- Jwalamukhi Thrust (1)
- Last Glacial Maximum (1)
- Marine terraces (1)
- Messinian Erosional Surface (1)
- Messinian Salinity Crisis (1)
- North Anatolian Fault (1)
- Orogenic Plateaus (1)
- Orogenic wedges (1)
- Patagonian Andes (1)
- Peruvian fore arc (1)
- Plateau margins (1)
- Pleistocene (1)
- Slab break-off (1)
- South American Monsoon System (1)
- Sumba Island (1)
- Surface Exposure Age (1)
- Surface uplift (1)
- TRMM satellite data (1)
- Taurus petroleum system (1)
- Tectonic Geomorphology (1)
- Tuz Golu Basin (1)
- Uplift (1)
- Uplift Rate (1)
- Uplift rate (1)
- active continental margin (1)
- aggradation-incision cycles (1)
- alluvial river (1)
- alluvial-fan sedimentation (1)
- apatite (U-Th)/He (1)
- apatite fission track (1)
- base-level fall (1)
- basin geometry (1)
- bedrock incision models (1)
- berylium-10 (1)
- biostratigraphy (1)
- channel changes (1)
- channel projection (1)
- convection (1)
- eastern Mediterranean (1)
- extensional tectonics (1)
- fault interaction (1)
- flow (1)
- fluvial strath terraces (1)
- fluvial terrace (1)
- fluvial terraces (1)
- glacial-interglacial cycles (1)
- grain-size (1)
- hyperaridity (1)
- inverse thermal modelling (1)
- inversion tectonics (1)
- kinematic analysis (1)
- knickpoints (1)
- lake shoreline (1)
- land-use change (1)
- landscape connectivity (1)
- landscape response (1)
- landscape response to climate change (1)
- mineral deposits (1)
- northern Kenya Rift (1)
- numerical modeling (1)
- optically stimulated luminescence (1)
- oroclinal bending (1)
- orogenic plateau evolution (1)
- orogenic processes (1)
- orogenic wedge (1)
- orographic rainfall (1)
- paleo-delta (1)
- paleo-erosion rate (1)
- physical stratigraphy (1)
- precipitation (1)
- relief development (1)
- river incision (1)
- river profile analysis (1)
- rock uplift (1)
- sediment transport (1)
- shortening (1)
- size distribution (1)
- slab window (1)
- steepness index (1)
- stream-power (1)
- surface inflation (1)
- surface processes (1)
- tectonic shortening (1)
- terrestrial cosmogenic nuclides (1)
- thermal modeling (1)
- trench advance (1)
- trench-parallel extension (1)
- uplift (1)
- uplift and erosion (1)
- volcanism (1)
Surface uplift at the northern margin of the Central Anatolian Plateau (CAP) is integrally tied to the evolution of the Central Pontides (CP), between the North Anatolian Fault (NAF) and the Black Sea. Our regional morphometric and plate kinematic analyses reveal topographic anomalies, steep channel gradients, and local high relief areas as indicators of ongoing differential surface uplift, which is higher in the western CP compared to the eastern CP and fault-normal components of geodetic slip vectors and the character of tectonic activity of the NAF suggest that stress is accumulated in its broad restraining bend. Seismic reflection and structural field data show evidence for a deep structural detachment horizon responsible for the formation of an actively northward growing orogenic wedge with a positive flower-structure geometry across the CP and the NAF. Taken together, the tectonic, plate kinematic, and geomorphic observations imply that the NAF is the main driving mechanism for wedge tectonics and uplift in the CP. In addition, the NAF Zone defines the boundary between the extensional CAP and the contractional CP. The syntectonic deposits within inverted intermontane basins and deeply incised gorges suggest that the formation of relief, changes in sedimentary dynamics, and > 1 km fluvial incision resulted from accelerated uplift starting in the early Pliocene. The Central Pontides thus provide an example of an accretionary wedge with surface-breaking faults that play a critical role in mountain building processes, sedimentary basin development, and ensuing lateral growth of a continental plateau since the end of the Miocene.
Structural and thermochronologic studies of the western margin of the central Andean Plateau show changing styles of deformation through time that give insights into tectonic evolution. In southwest Peru, uplift of the plateau proceeded in several distinct phases. First, NW striking, NE dipping reverse faults accommodated uplift prior to similar to 14-16 Ma. Subsequent uplift of the plateau relative to the piedmont (between the plateau and the Pacific Ocean) occurred between similar to 14 and 2.2 Ma and was accommodated by NW striking, SW dipping normal faults and subparallel monoclinal folds. The youngest phase of uplift affected the piedmont region and the plateau margin as a coherent block. Although the uplift magnitude associated with phase 1 is unknown, phases 2 and 3 resulted in at least 2.4-3.0 km of uplift. Up to 1 km of this may have occurred during phase 3. Geodynamic processes occurring in both the continental interior and the subduction zone likely contributed to uplift.
Apatite and zircon (U-Th)/He ages from Ocona canyon at the western margin of the Central Andean plateau record rock cooling histories induced by a major phase of canyon incision. We quantify the timing and magnitude of incision by integrating previously published ages from the valley bottom with 19 new sample ages from four valley wall transects. Interpretation of the incision history from cooling ages is complicated by a southwest to northeast increase in temperatures at the base of the crust due to subduction and volcanism. Furthermore, the large magnitude of incision leads to additional three-dimensional variations in the thermal field. We address these complications with finite element thermal and thermochronometer age prediction models to quantify the range of topographic evolution scenarios consistent with observed cooling ages. Comparison of 275 model simulations to observed cooling ages and regional heat flow determinations identify a best fit history with <= 0.2 km of incision in the forearc region prior to similar to 14 Ma and up to 3.0 km of incision starting between 7 and 11 Ma. Incision starting at 7 Ma requires incision to end by similar to 5.5 to 6 Ma. However, a 2.2 Ma age on a volcanic flow on the current valley floor and 5 Ma gravels on the uplifted piedmont surface together suggest that incision ended during the time span between 2.2 and 5 Ma. These additional constraints for incision end time lead to a range of best fit incision onset times between 8 and 11 Ma, which must coincide with or postdate surface uplift.