![](../../pictures/archives/compress/2014/1336/jpeg/05t.jpg) Round chalky deposits of marine Miocene Dam Formation in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1336/jpeg/02t.jpg) Marine Miocene Dam Formation in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1335/jpeg/26t.jpg) Stratified layers of limestone and Miocene deposits of the Dam Formation on the slope of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1336/jpeg/04t.jpg) Layers of Miocene Dam Formation in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1335/jpeg/14t.jpg) Chalky limestone in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1335/jpeg/01t.jpg) Sand covering chalky limestone in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2016/1799/jpeg/09t.jpg) Conical fossilized stromatolites (marine microbs) in area of Jebel Al-Nakhsh in south-western Qatar, April 2, 2016
![](../../pictures/archives/compress/2014/1334/jpeg/16t.jpg) Area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1334/jpeg/19t.jpg) Stones and pebbles in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1335/jpeg/13t.jpg) Dried stem of Zygophyllum in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1335/jpeg/16t.jpg) Slabs of gypsum crystals (selenite) in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1334/jpeg/22t.jpg) Seedling of Zygophyllum qatarense plant in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1335/jpeg/03t.jpg) Slab of gypsum crystals (selenite) in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1335/jpeg/06t.jpg) White gypsum crystals (selenite) in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1335/jpeg/05t.jpg) Pavement by gypsum crystals (selenite) in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1335/jpeg/04t.jpg) Layers of gypsum crystals (selenite) in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1335/jpeg/09t.jpg) Patterns of gypsum crystals (selenite) in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1336/jpeg/09t.jpg) Milkweed Glossonema varians on sand in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1336/jpeg/07t.jpg) Seedling of Fagonia ovalifolia(?) on sand in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1335/jpeg/17t.jpg) Slabs of gypsum crystals (selenite) with sand in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1335/jpeg/20t.jpg) Protruding layers of gypsum crystals (selenite) in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1334/jpeg/18t.jpg) Pebbles covering lithified sand dune in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1335/jpeg/22t.jpg) Texture of protruding gypsum crystals (selenite) in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1336/jpeg/06t.jpg) Polycarpaea repens on gypsum pavement (selenite) in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1334/jpeg/26t.jpg) Succulent twig of Zygophyllum qatarense plant in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1335/jpeg/10t.jpg) Patterns of layers of gypsum crystals (selenite) in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1336/jpeg/08t.jpg) Hairy leaves of Astragalus eremophilus(?) on sand in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1335/jpeg/02t.jpg) Sand covering gypsum crystals (selenite) in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1335/jpeg/07t.jpg) Grass growing on layers of gypsum crystals (selenite) in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1334/jpeg/20t.jpg) Pebbles covering layers of lithified sand dune in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1335/jpeg/11t.jpg) Green seedling of desert plant Zygophyllum qatarense in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1336/jpeg/20t.jpg) White flowers of Eremobium aegyptiacum (to the left) on sand in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1336/jpeg/01t.jpg) Desert rock carved by drifting sand (aeolian abrasion) in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1336/jpeg/14t.jpg) Launaea capitata (local names huwa, hazan) on sand in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1334/jpeg/17t.jpg) Lithified (compacted and hardened, turned to stone) sand dune in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1335/jpeg/12t.jpg) Compact seedling of desert plant Zygophyllum qatarense among sand in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1336/jpeg/18t.jpg) Stork bill (Monsonia nivea, Erodium neveum) on sand in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1334/jpeg/25t.jpg) Tiny flower of lunaria (Savignya parviflora, local name Gilgilan) in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1335/jpeg/25t.jpg) Hairy leaves of milkvetch Astragalus arpilobus subsp. hauarensis in sand in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1336/jpeg/19t.jpg) Stork bill with a flower (Monsonia nivea, Erodium neveum) on sand in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1336/jpeg/16t.jpg) Leaves of stork bill (Monsonia nivea, Erodium neveum) on sand in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1336/jpeg/17t.jpg) Stork bill with seeds (Monsonia nivea, Erodium neveum) on sand in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1336/jpeg/21t.jpg) Hairy leaves of milkvetch Astragalus arpilobus subsp. hauarensis submerged in sand in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1336/jpeg/22t.jpg) Rosette of leaves of stork bill (Monsonia nivea, Erodium neveum) on sand in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1334/jpeg/23t.jpg) Sand button (creeping thorn rose, Neurada procumbens, local name saadan) in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1335/jpeg/23t.jpg) Flower bud of Brown Lily (Dipcadi erythraeum, local names mesailemo, besailemo) in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1336/jpeg/10t.jpg) Haloxylon salicornicum (Hammada elegance local names remith, hamd) on sand in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1335/jpeg/21t.jpg) Members of the Qatar Natural History Group (QNHG) exploring area of gypsum crystal pavement (selenite) during fossil trip in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1336/jpeg/12t.jpg) Seedling of Zygophyllum qatarense (Tetraena qatarense) on sand in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1334/jpeg/24t.jpg) Zygophyllum simplex (Tetraena simplex, local name Daa, harm, hureim) in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1336/jpeg/13t.jpg) Brown lily (Dipcadi erythraeum, local names mesailemo, besailemo) with flower buds on sand in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1336/jpeg/15t.jpg) Flower buds of Brown lily (Dipcadi erythraeum, local names mesailemo, besailemo) on sand in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1335/jpeg/15t.jpg) Members of the Qatar Natural History Group (QNHG) exploring glittering gypsum pavement (selenite) during fossil trip in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2016/1787/jpeg/01t.jpg) Sunrise in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2014/1335/jpeg/19t.jpg) Haloxylon salicornicum (Hammada elegance, local names remith, hamd) growing in cracks of gypsum pavement (selenite) in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1335/jpeg/08t.jpg) Haloxylon salicornicum (Hammada elegance, local names remith, hamd) growing on layers of gypsum crystals (selenite) in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2016/1787/jpeg/17t.jpg) Gypsum plateau in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1787/jpeg/13t.jpg) Limestone mushroom in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1788/jpeg/11t.jpg) Edge of a plateau in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1788/jpeg/09t.jpg) Sand and sky ripples in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1788/jpeg/08t.jpg) Rock layers in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1788/jpeg/07t.jpg) Sand and rocks in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1787/jpeg/24t.jpg) Exposed pebbles in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1788/jpeg/06t.jpg) Rippled texture in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1788/jpeg/04t.jpg) Small wadi in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1787/jpeg/11t.jpg) Stony plateau in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1787/jpeg/05t.jpg) Sand ripples in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1787/jpeg/04t.jpg) Acacia tortilis(?) in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1787/jpeg/14t.jpg) Stone mushroom in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1788/jpeg/10t.jpg) Sand and sky texture in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1787/jpeg/10t.jpg) Plateau with pebbles in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2014/1336/jpeg/11t.jpg) Sand button (creeping thorn rose, Neurada procumbens, local name saadan) on sand in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1334/jpeg/21t.jpg) Geologist Jacques LeBlanc at the foot of ancient lithified dune of red sand guiding a fossil tour for Qatar Natural History Group (QNHG) in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2014/1335/jpeg/24t.jpg) Members of the Qatar Natural History Group (QNHG) exploring fossilised intertidal stromatolites (microbial mats, laminated sediments) during fossil trip in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
![](../../pictures/archives/compress/2016/1787/jpeg/18t.jpg) Gypsum pavement (selenite) in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1787/jpeg/16t.jpg) Gypsum rocks (selenite) in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1787/jpeg/07t.jpg) View from a hill slope in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1837/jpeg/17t.jpg) Salsola cyclophylla on roadside in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, June 10, 2016
![](../../pictures/archives/compress/2016/1787/jpeg/12t.jpg) Windblown sand with ripples in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1787/jpeg/03t.jpg) Acacia tortilis(?) in a desert in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1787/jpeg/02t.jpg) Acacia tortilis(?) at sunrise in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1775/jpeg/18t.jpg) Gypsum pavement (selenite) in area of Jebel Al-Nakhsh (Khashm an Nakhsh) in south-western Qatar, March 11, 2016
![](../../pictures/archives/compress/2016/1775/jpeg/20t.jpg) Gypsum crystals (selenite) in area of Jebel Al-Nakhsh (Khashm an Nakhsh) in south-western Qatar, March 11, 2016
![](../../pictures/archives/compress/2016/1787/jpeg/26t.jpg) View from a gypsum plateau in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1788/jpeg/01t.jpg) Gypsum slabs (selenite) in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1788/jpeg/05t.jpg) Sand and cloud ripples in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1788/jpeg/15t.jpg) Grass Stipagrostis obtusa in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1788/jpeg/02t.jpg) Windblown sand with rocks in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1788/jpeg/26t.jpg) Koelpinia linearis with fruits on roadside in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1775/jpeg/26t.jpg) Protruding gypsum crystals (selenite) in area of Jebel Al-Nakhsh (Khashm an Nakhsh) in south-western Qatar, March 11, 2016
![](../../pictures/archives/compress/2016/1775/jpeg/17t.jpg) Weathered gypsum slabs (selenite) in area of Jebel Al-Nakhsh (Khashm an Nakhsh) in south-western Qatar, March 11, 2016
![](../../pictures/archives/compress/2016/1789/jpeg/34t.jpg) Close up of grass Stipagrostis obtusa taken from area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1787/jpeg/15t.jpg) White gypsum crystals (selenite) in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1788/jpeg/17t.jpg) Dog s Paw plant (Camel s Eye, Gymnarrhena micrantha) in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1788/jpeg/16t.jpg) Spikelets of grass Stipagrostis obtusa in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1775/jpeg/22t.jpg) Slabs of gypsum crystals (selenite) in area of Jebel Al-Nakhsh (Khashm an Nakhsh) in south-western Qatar, March 11, 2016
![](../../pictures/archives/compress/2016/1837/jpeg/07t.jpg) Dry plant of Fagonia indica(?) on roadside in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, June 10, 2016
![](../../pictures/archives/compress/2016/1787/jpeg/19t.jpg) Layers of gypsum crystals (selenite) in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
![](../../pictures/archives/compress/2016/1787/jpeg/20t.jpg) Fossilised stromatolites (microbial mats) in area of Jebel Al-Nakhsh (Khashm an Nakhsh). South-western Qatar, March 25, 2016
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