贵阳哪里去治白癜风好(贵阳做好白癜风的预防与治疗工作) (今日更新中)

When the lithosphere is subject to a horizontal extensional force it will stretch, becoming thinner. Eventually, it will rupture, leading to the formation of a rift valley.This process is accompanied by surface manifestations along the rift valley in the form of volcanism and seismic activity. Rifts are the initial stage of a continental break-up and, if successful, can lead to the formation of a new ocean basin.An example of a place on Earth where this has happened is the South Atlantic ocean, which resulted from the break up of South America and Africa around 138m years ago -- ever noticed how their coastlines match like pieces of the same puzzle?Continental rifting requires the existence of extensional forces great enough to break the lithosphere. The East African Rift is described as an active type of rift, in which the source of these stresses lies in the circulation of the underlying mantle. Beneath this rift, the rise of a large mantle plume is doming the lithosphere upwards, causing it to weaken as a result of the increase in temperature, undergo stretching and breaking by faulting.Evidence for the existence of this hotter-than-normal mantle plume has been found in geophysical data and is often referred to as the "African Superswell."This superplume is not only a widely accepted source of the pull-apart forces that are resulting in the formation of the rift valley but has also been used to explain the anomalously high topography of the Southern and Eastern African Plateaus. 1506

When wildlife officers arrived at 11:30 p.m., they decided the best way to get the mountain lion out of the house was to use non-lethal bean-bag rounds to fire at it in an attempt to chase it out the front door, according to a release from Colorado Parks and Wildlife. After more than an hour, officers were successful in getting the mountain lion out of the house.CPW said they will have additional wildlife officers in the area Friday and over the weekend to make sure the mountain lion does not return.Officers reminded residents to keep ground-level doors and windows closed and locked at night. They also issued the following tips on reducing your risk of injury if you encounter a mountain lion. 706

who is seen sweeping Ames' leg is now on a non-enforcement assignment. The police department has not named any of the officers involved. 137

While many ran from the hail of gunfire, Marine Taylor Winston and police Officers Max Verduzco and Tom McGrath went back to save lives. 136

You can read the full letter to parents from Superintendent Dr. Jack Parker below:Today, Wednesday, December 16, 2020, is our first snow-day of the school year. As snow continues to fall, the Mt Vernon Community School Corporation is canceling all in-person learning activities for the day. All students and staff will experience virtual learning from their homes. Today will be dedicated for review and catch-up on assignments. All students have only one new assignment today.Students will use the scientific process in planning appropriate clothing to remain warm and dry while spending time outside. Once this hypothesis has been identified, and appropriate attire has been secured, students will be expected to test their theory by going outdoors and playing in the snow.Step two of this assignment will be to practice the skills of estimation and measurement when throwing snowballs at one another while maintaining a minimum of 6’ of distance with others outside of their household. When being hit with said snowball, students are expected to practice their social skills and to use their good words.Extra credit can be earned by helping to shovel sidewalks and/or driveways.Students will self-report their grades to their teachers tomorrow during our regular virtual-learning day. Teachers have the option to not record this as a graded assignment. Students who are not feeling well will be expected to complete the alternative assignment of resting indoors and drinking plenty of fluids.Opportunities to work on assignments given on previous days, as well as consulting with teachers on this school-work, can be made throughout the day via e-mail or other teacher directed communication media.This story was originally published by Katie Cox on WRTV in Indianapolis. 1774

来源：资阳报