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Jabuka Shoal, Split-Dalmatia County, Croatia

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Latitude & Longitude (WGS84): 43° 6' 6'' North , 15° 26' 21'' East
Latitude & Longitude (decimal): 43.10167,15.43917
Name(s) in local language(s):Pličina Jabuka, Splitsko-dalmatinska županija, Hrvatska

Jabuka Shoal is located approximately 2300 m WNW of Jabuka Islet. The top of the shoal is situated 6 m below sea level.

It is built up of both massive magmatic rock and conglomerate (cobbles and pebbles).

Samples from Jabuka Shoal are mostly medium-grained rocks of hypidiomorphic holocrystalline texture having a massive structure. However, some portions of rock characteristically resemble ophitic texture while other parts rarely contain spherulites, amygdales and fissures, filled with non-oriented needles of prehnite. Their mineral composition comprises clinopyroxenes and plagioclase, with subordinate amphibole (uralite), chlorite and opaque minerals. The most common mafic minerals are clinopyroxenes (pale green and brown monoclinic pyroxene). The first one is slightly zoned and shows weak pale green pleochroism. The distribution of fine-grained opaque minerals marks zoning in the clinopyroxene. Uralitisation altered clinopyroxene and produced secondary green amphibole. In these mineral aggregates chlorite is also present as a product of a later alteration process. The plagioclase commonly displays weak zoning with a more basic core and an acidic rim. Usually plagioclase contains sericite flakes and non-oriented opaque mineral inclusions (poikilitic texture). Also it shows polysynthetic twins. Accessories are opaque mineral(s) and apatite. All of the primary minerals are altered to various degrees.

Mineral List

3 valid minerals.

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org


ID: 3159723
submarine continental crust

Age: Anthropocene ( Ma)

Reference: Asch, K. The 1:5M International Geological Map of Europe and Adjacent Areas: Development and Implementation of a GIS-enabled Concept. Geologisches Jahrbuch, SA 3. [147]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


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Juračić, M., Novosel, A., Tibljaš, D., Balen, D. (2004): Jabuka Shoal, a new location with igneous rocks in the Adriatic Sea. Geologia Croatica, 57/1, 81–85.
De Min, A., Jourdan, F., Marzoli, A., Renne, P.R., Juračić, M. (2009): The tholeiitic magmatism of Jabuka, Vis and Brusnik Islands: a Carnian magmatism in the Adria Plate. Rendiconti online Soc. Geol. Ital., 9, 85-87.

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