Grain size distributions of fault rocks: A comparison between experimentally and naturally deformed granitoids

N Keulen, R Heilbronner, H Stünitz, AM Boullier… - Journal of Structural …, 2007 - Elsevier
We have investigated the grain size distribution (GSD) of granitoid fault rock by comparing
experimentally produced gouge with fault rock from the Nojima Fault Zone. Triaxial …

Grain size and grain shape analysis of fault rocks

R Heilbronner, N Keulen - Tectonophysics, 2006 - Elsevier
New methods for microstructural analysis of fault rocks (new shape descriptors for convexity/concavity
and angularity) and visualization (D-mapping) were developed and tested on …

Deglaciation of northwestern Greenland during Marine Isotope Stage 11

…, BA Keisling, PC Knutz, TB Thomsen, N Keulen… - Science, 2023 - science.org
Past interglacial climates with smaller ice sheets offer analogs for ice sheet response to
future warming and contributions to sea level rise; however, well-dated geologic records from …

Detrital zircon ages and heavy mineral composition along the Gulf of Tonkin-implication for sand provenance in the Yinggehai-Song Hong and Qiongdongnan basins

MBW Fyhn, TB Thomsen, N Keulen, C Knudsen… - Marine and Petroleum …, 2019 - Elsevier
Neogene reservoir sand in the Yinggehai-Song Hong (YGH-SHB) and Qiongdongnan basins
(QDNB) was derived from the Red River, Hainan Island and the Vietnamese Truong Son …

Searching for giant, ancient impact structures on Earth: The Mesoarchaean Maniitsoq structure, West Greenland

AA Garde, I McDonald, B Dyck, N Keulen - Earth and Planetary Science …, 2012 - Elsevier
A 100km-scale, circular region in the Archaean North Atlantic Craton centred at 6515′N, 5150′W
near Maniitsoq town in West Greenland comprises a set of highly unusual geological …

Grain size distribution and microstructures of experimentally sheared granitoid gouge at coseismic slip rates–Criteria to distinguish seismic and aseismic faults?

H Stünitz, N Keulen, T Hirose, R Heilbronner - Journal of Structural Geology, 2010 - Elsevier
Microstructures and grain size distribution from high velocity friction experiments are compared
with those of slow deformation experiments of Keulen et al. (2007, 2008) for the same …

Provenance signal variations caused by facies and tectonics: Zircon age and heavy mineral evidence from Miocene sand in the north-eastern North Sea Basin

…, V Siersma, C Knudsen, TF Kokfelt, N Keulen - Marine and Petroleum …, 2014 - Elsevier
The provenance of the Danish Miocene sands has been deduced from zircon ages and heavy
minerals integrated with an existing detailed stratigraphic model of the fluvio-deltaic sand …

Comparability of heavy mineral data–The first interlaboratory round robin test

…, R Jagodziński, S Józsa, P Kelemen, N Keulen… - Earth-science …, 2020 - Elsevier
Heavy minerals are typically rare but important components of siliciclastic sediments and rocks.
Their abundance, proportions, and variability carry valuable information on source rocks, …

Complex calc-alkaline volcanism recorded in Mesoarchaean supracrustal belts north of Frederikshåb Isblink, southern West Greenland: Implications for subduction …

…, MT Rosing, BF Windley, TF Kokfelt, N Keulen… - Precambrian …, 2012 - Elsevier
We present new geochemical data for three Mesoarchaean supracrustal belts (Ravns Storø,
Bjørnesund and Perserajoorsuaq) situated north of Frederikshåb Isblink in southern West …

[HTML][HTML] Archaean plate tectonics in the North Atlantic craton of West Greenland revealed by well-exposed horizontal crustal tectonics, island arcs and tonalite …

…, BF Windley, TF Kokfelt, N Keulen - Frontiers in Earth Science, 2020 - frontiersin.org
The 700 km-long North Atlantic Craton (NAC) in West Greenland is arguably the best exposed
and most continuous section of Eo-to Neoarchaean crust on Earth. This allows a close …