More pictures from Arizona. 跟多 Arizona 照片。

"Petrified wood (from the Greek root petro meaning "rock" or "stone"; literally "wood turned into stone") is a type of fossil that consists of fossil wood in which all the organic materials have been replaced with minerals (most often a silicate, such as quartz), while retaining the original structure of the wood. The petrifaction process occurs underground, when wood becomes buried under sediment and is initially preserved due to a lack of oxygen. Mineral-rich water flowing through the sediment deposits minerals in the plant's cells and as the plant's lignin and cellulose decay away, a stone mould forms in its place. In general, wood takes less than 100 years to petrify. The organic matter needs to become petrified before it decomposes completely. A forest where the wood has petrified becomes known as a petrified forest." ~Petrified Wood Wikipedia page.

Before I get started, I would just like to remind you that I made a Facebook Fan page for this photography blog. You can "Like Us" here. I have also made Google+ and Twitter pages. If you follow or "Like" me on these, you can be updated whenever I post something new! :) Please invite your friends too! I'm trying to get more viewers on here. Anyways, as always, enjoy my photos!

Pictures of petrified wood and ancient drawings found in Petrified Forest National Park in Arizona.
在树林化石国家公园在 Arizona 拍的化石和很久以前画的画。

Full Resolution Photos and Prints: If you want to see full resolution photos or buy prints of any of the photos you see, they are up on my portfolio for viewing here.

Picture of a petrified wood

木头化石

Ancient Drawing

很久以前人画的画。

"A cactus is (plural: cacti) a member of the plant family Cactaceae, native to the Americas (with one exception, Rhipsalis baccifera, which is native to parts of the Old World). They are often used as ornamental plants, and some are also crop plants for fodder, forage, fruits, cochineal, and other uses. Numerous species have been used since ancient times by indigenous peoples for their psychedelic effects. Cacti are part of the plant order Caryophyllales, which also includes members like beets, gypsophila, spinach, amaranth, tumbleweeds, carnations, rhubarb, buckwheat, plumbago, bougainvillea, chickweed and knotgrass." ~Wikipedia Page.

The next image is of a cactus from Grand Canyon National Park.
下一个找片是一个大峡谷国家公园的仙人掌。