eroded volcanic lava, shattered into the sea making sand. basalt with gas creates fountains of lava, steep pile of cinders and bombs, small half mile across, stage 1 capable of 1 week long eruption, stage 2 gas runs out, lava flows out of base. [no gas]. examples mammoth & mono lake.
The most common causes of rib cage pain are a pulled muscle or bruised ribs. Other causes of rib cage pain are: 1  broken ribs. 2  injuries to the chest. 3  rib fracture. 4  diseases that affect the bones, such as osteoporosis. 5  inflamed lining of the lungs. 6  muscle spasms. 7  inflamed rib cartilage.
1 Spleen irritation-Irritation or rapture of the spleen can also cause discomfort and pain under the left rib cage. 2  Pain in the left shoulder tips is added signs of a spleen rapture or damage. Costochondritis-This is a condition that results from an infection of cartilages that bond the ribs with the breastbone. 2  This can be the result of a forceful impact of the shoulder and rib cage area or caused by a viral infection. 3  Unbearable pain is experienced near the breastbone as the patient breaths heavily.