Magnetic properties of Precambrian rocks from the Denman Glacier area and the Obruchev Hills ...

• Main Authors: Golynsky, Dmitry, Borovkov, Nikita, Golynsky, Alexander, Kim, Hyung Rae
• Format: Conference Object
• Language: unknown
• Published: GFZ German Research Centre for Geosciences 2023
• Subjects: Charcot; Obruchev; Denman Glacier; Cape Kennedy; Obruchev Hills; Cape Charcot; Delay Point; Hippo Island
• Online Access: https://dx.doi.org/10.57757/iugg23-1629; https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017975

<!--!introduction!--> This study covered an area on the western side of the Denman Glacier and the Obruchev Hills, where the predominantly granulite-facies metamorphic rocks exposed of rather different composition. They are intruded by a wide variety of plutonic rocks, including a major batholith of syenitic to granitic composition at David Island. A variety of intrusive rocks (gabbrodiorite, granite-aplite and Bt-granite) of 500 m.a. batholith, exposed at Cape Delay Point, are characterized by high values of magnetic susceptibility (13÷22)×10 -3 SI units. However, biotite gabbro has low values. The granosyenites and granodiorites of Hippo Island mainly have high values of magnetic susceptibility (40÷50)×10 -3 SI units. The Batholith dyke complex in the area of Cape Kennedy is mainly composed by non-magnetic rocks, with the exception of Bt leucogranite 64×10 -3 SI units. Also, the aplite of Gilles Island has high values of magnetic susceptibility (55÷70)×10 -3 SI units. The Archean Cape Charcot ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ...