Fitxategi:Cupriferous amygdaloidal basalt (Mesoproerozoic, 1.05-1.06 Ga; Keweenaw Peninsula, northern Michigan, USA) (16691110994).jpg
Bereizmen handikoa ((2.505 × 1.992 pixel, fitxategiaren tamaina: 3,2 MB, MIME mota: image/jpeg))
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Laburpena
DeskribapenaCupriferous amygdaloidal basalt (Mesoproerozoic, 1.05-1.06 Ga; Keweenaw Peninsula, northern Michigan, USA) (16691110994).jpg |
Cupriferous amygdaloidal basalt from the Precambrian of Michigan, USA. (public display, Seaman Mineral Museum, Michigan Technological University, Houghton, Michigan, USA) A mineral is a naturally-occurring, solid, inorganic, crystalline substrance having a fairly definite chemical composition and having fairly definite physical properties. At its simplest, a mineral is a naturally-occurring solid chemical. Currently, there are over 4900 named and described minerals - about 200 of them are common and about 20 of them are very common. Mineral classification is based on anion chemistry. Major categories of minerals are: elements, sulfides, oxides, halides, carbonates, sulfates, phosphates, and silicates. Elements are fundamental substances of matter - matter that is composed of the same types of atoms. At present, 118 elements are known (four of them are still unnamed). Of these, 98 occur naturally on Earth (hydrogen to californium). Most of these occur in rocks & minerals, although some occur in very small, trace amounts. Only some elements occur in their native elemental state as minerals. To find a native element in nature, it must be relatively non-reactive and there must be some concentration process. Metallic, semimetallic (metalloid), and nonmetallic elements are known in their native state as minerals. Copper is the only metallic element that has a "reddish" color - it’s actually a metallic orange color. Most metallic elements, apart from gold & copper, are silvery-gray colored. Copper tends to form sharp-edged, irregular, twisted masses of moderately high density. It is moderately soft, but is extremely difficult to break. It has no cleavage and has a distinctive hackly fracture. The copper-bearing rock shown above come from northern Michigan's Portage Lake Volcanic Series, an extremely thick, Precambrian-aged, flood-basalt deposit that fills up an ancient continental rift valley. This rift valley, analogous to the present-day East African Rift Valley, extends from Kansas to Minnesota to the Lake Superior area to southern Michigan. Unlike many flood basalts (e.g., Deccan Traps, Siberian Traps, Columbia River), the Portage Lake only filled up the rift valley. The unit is exposed throughout Michigan’s Keweenaw Peninsula, in the vicinity of the towns of Houghton & Hancock. The Portage Lake succession thickens northward through the Keweenaw, up to >5.5 km worth of section in places. The dominant rock type is basalt - vesicular basalts, for the most part. Most of the original vesicles (gas bubbles) have since been filled up with a wide variety of different minerals. A vesicular basalt that has had its vesicles filled up with minerals is called an amygdaloidal basalt (try saying that five times quickly). Keweenaw amygdaloidal basalts have long had significant economic importance because native copper (Cu) is one of the more common vesicle-filling mineral. The above rock is an excellent example of a cupriferous amygdaloidal basalt. Locality: Keweenaw Peninsula, northern Michigan, USA |
Data | |
Jatorria | Cupriferous amygdaloidal basalt (Mesoproerozoic, 1.05-1.06 Ga; Keweenaw Peninsula, northern Michigan, USA) |
Egilea | James St. John |
Lizentzia
- Askea zara:
- partekatzeko – lana kopiatzeko, banatzeko eta bidaltzeko
- birnahasteko – lana moldatzeko
- Ondorengo baldintzen pean:
- eskuduntza – Egiletza behar bezala aitortu behar duzu, lizentzia ikusteko esteka gehitu, eta ea aldaketak egin diren aipatu. Era egokian egin behar duzu hori guztia, baina inola ere ez egileak zure lana edo zure erabilera babesten duela irudikatuz.
This image was originally posted to Flickr by jsj1771 at https://www.flickr.com/photos/47445767@N05/16691110994. It was reviewed on 2015ko maiatzaren 3a by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
2015ko maiatzaren 3a
Fitxategi honetan agertzen diren itemak
honako hau irudikatzen du
some value
15 iraila 2010
captured with ingelesa
Nikon D70s ingelesa
exposure time ingelesa
0.01666666666666666666 segundo
f-number ingelesa
5,6
200 milimetro
media type ingelesa
image/jpeg
checksum ingelesa
ee7c9114358b97c55c6ca0745fc0112a96f49ccb
data size ingelesa
3.357.327 Byte
1.992 pixel
2.505 pixel
Fitxategiaren historia
Data/orduan klik egin fitxategiak orduan zuen itxura ikusteko.
Data/Ordua | Iruditxoa | Neurriak | Erabiltzailea | Iruzkina | |
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oraingoa | 22:03, 3 maiatza 2015 | 2.505 × 1.992 (3,2 MB) | Natuur12 | Transferred from Flickr via Flickr2Commons |
Irudira dakarten loturak
Hurrengo orrialdeek dute fitxategi honetarako lotura:
Metadatuak
Fitxategi honek informazio gehigarri dauka, ziurrenik kamera digital edo eskanerrak egiterako momentuan gehitutakoa. Hori dela-eta, jatorrizko fitxategi hori aldatu egin bada, baliteke xehetasun batzuek errealitatearekin bat ez egitea.
Kameraren fabrikatzailea | NIKON CORPORATION |
---|---|
Kamera mota | NIKON D70s |
Esposizio denbora | 1/60 s (0,016666666666667) |
F Zenbakia | f/5,6 |
Datuen sorreraren data eta ordua | 09:29, 15 iraila 2010 |
Lentearen fokatze luzera | 200 mm |
Orientazioa | Arrunta |
Bereizmen horizontala | 300 dpi |
Bereizmen bertikala | 300 dpi |
Erabilitako softwarea | Adobe Photoshop CS2 Macintosh |
Fitxategi aldaketaren data eta ordua | 13:32, 29 apirila 2015 |
Y eta Cren kokatzea | Gune partekatua |
Esposizio Programa | Definitu gabe |
Exif bertsioa | 2.21 |
Digitalizazioaren data eta ordua | 09:29, 15 iraila 2010 |
Osagai bakoitzaren esanahia |
|
Irudi konpresio mota | 4 |
Esposizio biasa | 0 |
Gehienezko landa irekiera | 5 APEX (f/5,66) |
Distantzia-neurtze modua | Eredua |
Argiaren jatorria | Ezezaguna |
Flash | Flasharekin, estrobo itzulera argia detektatu da, auto modua |
DataDenbora azpisegunduak | 10 |
DataDenboraOrijinala azpisegunduak | 10 |
DataDenboraDigitalizatu azpisekunduak | 10 |
Gaitutako Flashpix bertsioa | 1 |
Kolore tartea | sRGB |
Sensorearen metodoa | Txip bakarreko kolorezko eremu sentsorea |
Fitxategiaren jatorria | Argazki kamera digitala |
Eskena mota | Zuzenean argazkia atera zaion irudi bat |
Irudien prozesamendu pertsonalizatua | Prozesu arrunta |
Esposaketa mota | Esposizio automatikoa |
Txurien oreka | Zurien balantze automatikoa |
Zoom digitalaren eskala | 1 |
35 mm-ko filmerako foku luzera | 300 mm |
Eskena hartze mota | Arrunta |
Eskena kontrola | Ezer |
Kontrastea | Arrunta |
Asetasuna | Arrunta |
Fokatzea | Arrunta |
Subjektuaren distantzia balio-eremua | Ezezaguna |
Gaitutako Flashpix bertsioa | 1 |
Baliozko irudi altuera | 2.505 px |
Baliozko irudi zabalera | 1.992 px |
Datuaren metadata azken aldiz aldatu da | 09:32, 29 apirila 2015 |