Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 5 of 5 for “"fission tracks"”.
-
The Effect of Pressure on Ion Track Formation in Minerals
… and chemical changes can occur in these ion tracks with diameters of several nm. In nature, such trails are generated by spontaneous fission of 238U-nuclei. So far, irradiation experiments with heavy ions were always performed under vacuum conditions. Studies of ion-track formation in …
-
The thermal history of the western lower Saxony Basin, Germany
… uplift. Investigations on zircon and apatite fission tracks indicate a complex thermal history of the basin. The data imply that the Lower Saxony Basin has experienced three thermal heating events after the deposition of the Carboniferous. Moreover, fission track ages imply that the high …
-
On apatite fission-track analysis and heat transfer processes in the upper crust
Fission-track ages and confined track-length measurements from detrital apatites recovered from Ocean Drilling Program (ODP) Leg 116 Site 717 and 718 cores of distal Bengal Fan sediments provide information on both the thermal history of sediments recovered at these two sites and the cooling rates …
-
Neoproterozoic to Holocene tectonothermal evolution of the southern Cantabrian Mountains NW Iberia, revealed by apatite fission-track thermochronology
… been insignificant to totally anneal preexisting fission tracks. AFT grain-age subcomponents indicate AFT partial annealing zone (PAZ) conditions in the Narcea Antiform may have prevailed from as early as Neoproterozoic time. Alternatively, many pre-Stephanian Palaeozoic rocks near major …
-
Post-Orogenic Thermal History and Exhumation of the Northern Appalachian Basin: Low-Temperature Thermochronologic Constraints
<p>Since the early development of the fission-track dating method by Price, Walker and Fleischer in the 1960’s and 1970’s, the method has evolved into a robust tool for constraining thermal histories and determining exhumation rates within the upper continental crust. Low-temperature …