LONDON, July 23 (Reuters) - Northwest European gasoline refining margins fell sharply by
$7.55 to $31.51 a barrel on Thursday as underlying crude prices surged above $100 a barrel on Middle East supply concerns.

• A total of 16,800 metric tons of Eurobob E5 barges traded on Argus, with Shell, Exxon Mobil, Sahara, BP and Petroineos selling to Gunvor, MB Energy, Varo and Trafigura.

• No Eurobob E10 barges traded.

• Exxon Mobil also sold an E5 barge to Trafigura in the Platts window.

• Oil product stocks independently held in the Amsterdam-Rotterdam-Antwerp (ARA) refining and storage hub fell by 2.3% on the week, data from Dutch consultancy Insights Global showed on Thursday. ARA/

• Total stocks stood at 4.05 million tons, their lowest since May 2014, the data showed.

• Gasoline stocks were lower by 1% at 810,000 tons on steady exports to the U.S., Africa and the Mediterranean.

• Nigeria's Dangote refinery has reversed its decision to sell fuel products to the local market in U.S. dollars, the company said in a statement on Thursday, bringing relief to consumers who feared this could lead to shortages of fuel.