Calca on Eyre Peninsula near Streaky Bay. Granite outcrops where the soil has weathered away leaving inselbergs standing tall above the paddocks. : 無料・フリー素材/写真
Calca on Eyre Peninsula near Streaky Bay. Granite outcrops where the soil has weathered away leaving inselbergs standing tall above the paddocks. / denisbin
| ライセンス | クリエイティブ・コモンズ 表示-改変禁止 2.1 |
|---|---|
| 説明 | Murphy’s Haystacks and Point Labatt. The so called haystacks rocks are a series of dramatically weathered granite outcrops which are possibly as much as 1,500 million years old. They were named after Dennis Murphy the original landowner on whose property the rocks are located. The pillars are tall rocks with concave shapes that are now detached from the underlying bedrock. The pillars and boulders have side walls that are flared in shape. The flared shapes are the result of weathering by soil moisture from just beneath the land surface and along fractures. Because the near-surface soil dries out in summer the weathering is slower at the junction of the rock and soil compared with deeper down where soil moisture is always present. As wind erosion has removed surface layers of soil the exposed pillar walls emerge as concave in shape. In some cases the flared slope has advanced toward the centre of the rock from all sides to such an extent that the tops of the rocks are much wider than the remaining core near the soil surface. Point Labatt Conservation Park was created in 1973 to protect the landscape and more importantly to protect the endangered Australian sea lion colony there. The high cliffs at Point Labatt protect the baby sea lions and the colony in general. The males travel hundreds of kilometres but the females always return here to give birth to their pups. The males are very aggressive during birthing season which is always 18 months apart on mid-winter one year and mid-summer the next. Pups are about 7 kilos in weight when born and they rely on their mother’s milk for the first year. Then they start fishing. Baby pups just four weeks of age go out into the sea for play but they are not searching for food. |
| 撮影日 | 2019-09-12 13:44:20 |
| 撮影者 | denisbin |
| タグ | |
| 撮影地 | |
| カメラ | DSC-HX90V , SONY |
| 露出 | 0.001 sec (1/1000) |
| 開放F値 | f/4.5 |