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Globigerina Limestone 'Gold Flow' ----- Birgu Malta

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Artist's Description

Limestone is a sedimentary rock composed largely of the minerals calcite and/or aragonite, which are different crystal forms of calcium carbonate (CaCO3).

Like most other sedimentary rocks, limestones are composed of grains; however, most grains in limestone are skeletal fragments of marine organisms such as coral or foraminifera. Other carbonate grains comprising limestones are ooids, peloids, intraclasts, and extraclasts. Some limestones do not consist of grains at all and are formed completely by the chemical precipitation of calcite or aragonite. i.e. travertine.

The solubility of limestone in water and weak acid solutions leads to karst landscapes. Regions overlying limestone bedrock tend to have fewer visible groundwater sources (ponds and streams), as surface water easily drains downward through joints in the limestone. While draining, water and organic acid from the soil slowly (over thousands or millions of years) enlarges these cracks; dissolving the calcium-carbonate and carrying it away in solution. Most cave systems are through limestone bedrock.

Make – NIKON CORPORATION
Model – NIKON D90
D90 lens nikkor afs 16 85mm f 3.5 5.6g ED VRII
XResolution – 300
YResolution – 300
ResolutionUnit – Inch
Software – Adobe Photoshop Lightroom
DateTime – 2010:11:25 18:26:21
ExifOffset – 200
ExposureTime – 1/200 seconds
FNumber – 11
ExposureProgram – Aperture priority
ISOSpeedRatings – 200
ExifVersion – 0221
DateTimeOriginal – 2009:05:09 05:47:18
DateTimeDigitized – 2009:05:09 05:47:18
ShutterSpeedValue – 1/200 seconds
ApertureValue – F 11.00
ExposureBiasValue – -2.00
MaxApertureValue – F 3.86
MeteringMode – Multi-segment
LightSource – Auto
Flash – Not fired
FocalLength – 24.00 mm
SubsecTimeOriginal – 00
SubsecTimeDigitized – 00
SensingMethod – One-chip color area sensor
FileSource – DSC – Digital still camera
SceneType – A directly photographed image
CustomRendered – Normal process
ExposureMode – Auto
White Balance – Auto
DigitalZoomRatio – 1 x
FocalLengthIn35mmFilm – 36 mm
SceneCaptureType – Standard
GainControl – None
Contrast – Normal
Saturation – Normal
Sharpness – Normal
SubjectDistanceRange – Unknown

Artwork Comments

  • Marvin Collins
  • Bootiewootsy
  • rosson1
  • Xandru
  • wilsonsz
  • Ronald cox
  • Karen  Betts
  • lorilee
  • GailD
  • barkeypf
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desktop tablet-landscape content-width tablet-portrait workstream-4-across phone-landscape phone-portrait
desktop tablet-landscape content-width tablet-portrait workstream-4-across phone-landscape phone-portrait

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