humus-water grooves

humus-water grooves
   This is a special type of meandering karren or wall karren in which the water originated in humus covering. Water originating from a humus cover has an excess of CO2 and is therefore, very aggressive and can dissolve large amounts of limestone. Thus humus-water grooves can be very deep but after approximately 2–3 meters, the grooves flatten out and continue as normal meanders or wall karren [3]. See also meander karren; wall karren.

A Lexicon of Cave and Karst Terminology with Special Reference to Environmental Karst Hydrology. . 2002.

Look at other dictionaries:

  • meandering karren —    These are small grooves cut directly into the rock surface, generally a few centimeters wide and deep. Their size remains the same or decreases downslope and usually exhibit small meanders with typical undercut slopes and slip off slopes. They …   Lexicon of Cave and Karst Terminology

  • wall karren —    These are found on vertical walls as a result of water flowing down the walls without any area wide moistening although area wide sprinkling occasionally influences their development [3].    See also meandering karren; humus water grooves …   Lexicon of Cave and Karst Terminology

  • coleopteran — /koh lee op teuhr euhn, kol ee /, adj. 1. belonging or pertaining to the order Coleoptera. n. 2. a beetle. [1840 50; COLEOPTER(A) + AN] * * * ▪ insect Introduction   any member of the insect order Coleoptera, consisting of the beetles and weevils …   Universalium

  • sedimentary rock — Rock formed at or near the Earth s surface by the accumulation and lithification of fragments of preexisting rocks or by precipitation from solution at normal surface temperatures. Sedimentary rocks can be formed only where sediments are… …   Universalium

  • acarid — /ak euh rid/, n. 1. an acarine, esp. a mite of the family Acaridae. adj. 2. of or pertaining to an acarid. [1875 80; ACAR(US) + ID2] * * * ▪ arachnid Introduction       any member of the subgroup of the arthropod class Arachnida that includes the …   Universalium

  • Linear aeration — is a relatively new aeration process; it allows water to penetrate the soil and to be retained in the proper amounts. Linear aeration also adds organic nutrition, soil softeners (humus, topsoil, compost, sand, clay, etc.) if necessary. Linear… …   Wikipedia

  • annelid — /an l id/, n. 1. any segmented worm of the phylum Annelida, including the earthworms, leeches, and various marine forms. adj. 2. belonging or pertaining to the Annelida. Also, annelidan /euh nel i dn/. [1825 35; see ANNELIDA] * * * Any member of… …   Universalium

  • fern — fernless, adj. fernlike, adj. /ferrn/, n. any seedless, nonflowering vascular plant of the class Filicinae, of tropical to temperate regions, characterized by true roots produced from a rhizome, triangular fronds that uncoil upward and have a… …   Universalium

  • Fern — /ferrn/, n. a female given name. * * * Any of about 10,000–12,000 species (division Filicophyta) of nonflowering vascular plants that have true roots, stems, and complex leaves and reproduce by spores. Though ferns were once classified with the… …   Universalium

  • Coprinellus micaceus — Scientific classification Kingdom …   Wikipedia