PaglalarawanThin Section of Hillhouse Gabbro - geograph 5888115.jpg
English: Thin section of Hillhouse Gabbro from near Dundonald in Scotland.
A photomicrograph of a petrographic section of the local rock, an analcime gabbro of Carboniferous age. The rock slice has been cut and lapped to 30 micrometres thickness, then photographed by a high-resolution camera attached to a polarising microscope. The false colours are caused by retardation of the polarised light which travels at different speed depending upon its alignment with the crystal axes. Perfectly isotropic materials are completely black, as are crystals whose axes align with the planes of polarisation. The colours enable geologists to identify the minerals of the rock - here pyroxene and olivine are bright, while plagioclase feldspar is humbug-striped. The length of the large, blue crystal is around 1.6mm.
The section was prepared by the photographer in his own workshop/kitchen from material collected from Hillhouse Quarry (latitude 55:34.4379N, longitude 4:36.9120W).
This image was taken from the Geograph project collection. See this photograph's page on the Geograph website for the photographer's contact details. The copyright on this image is owned by Jonathan Wilkins and is licensed for reuse under the Creative Commons Attribution-ShareAlike 2.0 license.
para ibahagi – para kopyahin, ipamahagi, at i-transmit ang akda
para i-remix – para i-adapt ang akda
Sa ilalim ng mga kondisyong ito:
atribusyon – Dapat magbigay ka ng isang maayos na pag-credit, ibigay ang link sa lisensiya, at tukuyin kung may mga pagbabagong ginawa. Magagawa mo ito sa isang risonableng paraan, pero hindi sa paraan na para bang ineendorso ka o ng paggamit mo ng naglisensiya sa'yo.
share alike – Kung ire-remix mo, babaguhin, o magdadagdag ka sa materyal, dapat mong ipamahagi ang mga ambag mo sa ilalim ng pareho o katulad na lisensiya.
Naglalaman ng mga karagdagang impormasyon ang talaksan na ito, marahil nadagdag mula sa kamerang digital o scanner na ginamit upang makalikha o gawing digital ito. Kung nabago ang talaksan mula sa orihinal na katayuan, maaaring hindi maipapakita ng lubusan ang detalye ng binagong larawan.