Marls

Marl, an impure, soft, earthy, carbonate rock, contains varying amounts of clay and sand intermixed in a loosely knit crystalline stmcture. 

Carbonates and Sulfates Carbonates include limestone, cal-cite, marble, marls, chalk, dolomite, and magnesite the most important sulfates are barite, celestite, anhydrite, and gypsum these are used as fillers in paint, paper, and rubber. (Gypsum and anhydrite are discussed below as part of the cement, lime, and gypsum industries.)... 

Marls like keuper marl such as marble 20 10 to 30 5 to 300 -... 

Fig. 22-3 shows the total number of perforations per kilometer in a 180-km DN 500 long-distance gas pipeline with a wall thickness of 9 mm which was laid in 1928 in a corrosive red-marl soil. There was no influence from stray currents. 

Mercur, Mercur-. see Merkur, Merkur-. Mergel, m. marl, -art, /. (kind or variety of) marl. 

Affric.) marling, -erde,/. earthy marl, mergelhaltig, a. containing marl, marly, mergelig, a. marly. 

Mergelkalk, m. marly limestone, mergeln, v.t. marl, treat with marl. Mergel-schiefer, m. slaty marl, -ton, m. marly clay, argillaceous marl. 

Mergelung,/. marling, treating with marl. Merinorot, n. Dyeing) Turkey red. merkbar, a. perceptible, noticeable. 

Moor-kohle,/. moor coal (black subbituminous coal), -lauge, /. extract from bog earth or peat, -mergel, m. bog marl, -salz, n, salt from peaty soil, -wasser, n. peat water. Moos, n. moss, -achat, m. moss agate, moosartig, a. moss-like, mossy. 

Seifen-erde, /. fuller s earth marl sapona-... 

Stink-farbe, /. old weak tan liquor, -fluss, -flussspat, m. fetid fluor spar (bituminous fluorite), -harz, n. asafetida. -kalk, m. anthraconite (bituminous limestone), ohle, /. fetid coal, -mergel, m. fetid marl (bituminous marl), -ol, n. fetid oil, specif, animal oil. -quarz, m. fetid quartz (bituminous quartz), -raum, m. gas chamber, -raum-probe, /. gas-chamber test, -schiefer, m. fetid shale, -spat, m. = Stinkfluss. -stein. 

Marl. This is loose or crumbly deposit that contains a substantial amount of calcium carbonate. 

Soil composition Calcareous, marly limestone Sandy marl, not stratified sand + 2... 

GERD HONS GFB Tenside, Huls AG, Marl, Germany... 

The author is indebted to Hoechst AG, Frankfurt a. M. and Hiils AG, Marl, Germany, for sponsoring much of the original artwork. 

Marl Loose deposit consisting mainly of CaCOs... 

Reg soils are closely associated with desertic regions. They have developed on stable surfaces where coarse, gravelly desert alluvium is exposed, and are characterized by a well-developed desert pavement and exhibit some well-defined soil horizons. They occur mostly on depositional surfaces where stones and gravels have been deposited since Neogene times. The surfaces commonly consist of stony, unconsolidated sedimentary deposits in which limestone, dolomite, chalk, flint and marl predominate, together with some fines (silt and clay). Sandstone and granite debris have also been reported to contribute to Reg formation. Less frequently, they form on sedimentary bedrock (Fig. 1.5). 

Vertisols in Madagascar formed on basalt and marl contain very high Cr (200-540 mg/kg), while alluvial soils have 190 mg/kg Cr (Aubert and Pinta, 1977). In vertisols derived on alluvions, Pb is in the range of 20-45 mg/kg, while the average Cr in saline soils of the region is from 1-22 mg/kg. Vertic soils on marl and basalt contain 700-2400 mg/kg Mn. In soils derived on clayey sands and alluvions, Zn content is 105 mg/kg. Soils formed on alluvions contain 115 mg/kg Ni. 

The Ebro headwaters flow on calcareous substratum, specifically sandstone and calcium marls, from the Triassic, Cretacic, and Jurassic. During the Quaternary, at the plain of La Virga (Reinosa), a shallow lake accumulated the deposits of siliceous sandrocks. This old highland lake is now the Embalse del Ebro reservoir. From that point downstream to Conchas de Haro the main channel flows on calcareous rocks from the Cretacic, highly resistant to the erosion. 

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