Vegetation of the Mid Hills - A

Eastern Mojave Vegetation	The Vegetation of Lobo Point and North Wild Horse Mesa, Mojave National Preserve, San Bernardino County, California.
	Tom Schweich

Topics in this Article: Introduction Geography Geology Climate Methods Results Discussion Summary Literature Cited	Portions of this paper were originally presented at the 1995 Desert Research Sympoiums at the San Bernardino County Museum. My work in this area is ongoing and this paper has been updated as new information became available.
Other articles: • Wild Horse Canyon Road: at Lobo Point; • FAQ: Lobo Point; Locations: Columbia Mountain. Hole-in-the-Wall. Lobo Point. Mid Hills. Lobo Point in the early morning.	Introduction A small valley near a prominent point of rocks called Lobo Point by local residents contains a pinyon-juniper woodland of about six hectares. Lobo Point, shown at left, is in the Mid Hills area of Mojave National Preserve, approximately three km northwest of NPS's Hole-in-the-Wall Campground, and is located in the Columbia Mountain, California 7.5 Minute Quadrangle.
Literature Cited: - Hickman, James C. (Ed.), 1993. Locations: Wild Horse Mesa. Location of Lobo Point.	At 1400 m elevation, the site is the lowest pinyon-juniper grove in the Mid Hills. A larger woodland is found in a valley north of Wild Horse Mesa, and about 3 km west of Lobo Point. The purpose of this study is to develop a description of the vegetation at these two sites, and relate it to local and regional vegetation. Botanical nomenclature follows Hickman (1993).
Locations: Oakland.	I first visited this valley in 1980, with the Merritt College (Oakland, California) Desert Studies class. Over time, and after repeated return visits with Merritt College, I continued to visit the area, and take an interest in the local vegetation.
Literature Cited: - Schweich, Thomas A, 1995. Goodbye Lobo Point! (1986).	Major portions of this paper were presented at the 1995 Desert Research Symposium, San Bernardino County Museum, May 20, 1995, and published in symposium proceedings (Schweich, 1995). Those portions are republished in hypertext form on the World Wide Web by permission.
	Geography
Locations: Barstow. Las Vegas. Needles.	The triangular area between Barstow and Needles, California and Las Vegas, Nevada is sometimes called the "Lonesome Triangle." This "triangle" can also be defined by highways US Interstate 15, US Interstate 40, and US Highway 95. A large portion of the eastern portion of the area is taken up by the Mojave National Preserve. The Mid Hills are found in the approximate center of Mojave National Preserve.
Locations: Granite Mountains. McCullough Range. Mid Hills. Muddy Mountains. New York Mountains. Providence Mountains. Virgin Mountains.	The Mid Hills form a ridge line between the Providence Mountains and the New York Mountains in the eastern Mojave Desert of southeastern California. The Providence and New York Mountains form part of a chain of mountains that stretch from the Granite Mountains to the southwest, through the Providence Mountains, the Mid Hills, and the New York Mountains to the McCullough Range, the Muddy Mountains and the Virgin Mountains in Utah.
	Access to the Mid Hills is from US Interstate 15 and US Interstate 40. US Interstate 40 provides access from the south, via Essex Road and Black Canyon Road. US Interstate 15 provides access from the north, using the Valley Wells exit, and Kessler Springs Road through Cima.
Locations: Baker. Las Vegas. Ludlow. Needles. Valley Wells.	There is a National Park Service Interpretative Center and Campground at Hole-in-the-Wall, and a campground at Mid Hills. There are no commercial services available anywhere within Mojave National Preserve. The nearest gas stations are at Baker, Ludlow, and Valley Wells (closed in May, 1999). The nearest large markets are in Barstow, Las Vegas, and Needles. A small selection of supplies may be found in Baker.
	Geology
	The rocks of the Mid Hills comprise three major groups: Precambrian schist and gneiss, Mesozoic granite, and Miocene rhyolitic flows and tuffs. There is also a small amount of fresh water limestone within the Miocene tuffs.
Locations: Caruthers Canyon. Cedar Canyon. Kelso Valley. Cedar Canyon as seen from Pinto Mountain	The major structural feature of the Mid Hills is the Cedar Canyon Fault, which originates in the Kelso Valley, comes through Cedar Canyon, and terminates mysteriously at the mouth of Caruthers Canyon on the south side of the New York Mountains.
	In terms of the present day tectonic regime, the Mid Hills appears to be the extreme northwestern edge of the Sonoran neotectonic block. Across the Kelso Valley below the Mid Hills begins the Great Basin neotectonic province.
	Both the National Park Service and the United States Geological Survey have web pages about the geology of Mojave National Preserve. You can find them at: Geology of Mojave National Preserve, by the National Park Service, and Geology and Mineral Resources of the East Mojave National Scenic Area, San Bernardino County, California
Other articles: • Eastern Mojave Geology: other pages;	I also have a few notes about eastern Mojave geology. You can find those notes at my page on "Eastern Mojave Geology," using the link at left.
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If you have a question or a comment you may write to me at: tomas@schweich.com I sometimes post interesting questions in my FAQ, but I never disclose your full name or address.	[Home Page] [Site Map] Date and time this article was prepared: 12/9/2024 7:34:40 PM