DUBAI, Aug 23 (Reuters) - Gulf stock markets continued dropping early on Tuesday after Brent crude oil LCOc1 fell back below $49 a barrel and short-term technicals for several indexes in the region turned negative over the past few days.

The Saudi index .TASI fell 0.6 percent to 6,074 points in the first 45 minutes of trade. On Monday it confirmed a break of support on its early August low of 6,226 points, triggering a right triangle formed by the highs and lows since April and pointing down to the 5,600-point area in the medium term.

The drop was broad-based on Tuesday with losers outnumbering gainers by 123 to 12. Saudi Basic Industries 2010.SE , the biggest petrochemical producer, fell 0.3 percent.

Dubai's index .DFMGI , which in the last few days failed a test of resistance on the April peak of 3,605 points, dropped 0.5 percent to 3,516 points.

Construction company Drake & Scull International DSI.DU slid 1.4 percent in heavy trade; it has lost 11 percent since it announced a big second-quarter loss in mid-August.

Qatar's index .QSI dropped 0.7 percent to 11,139 points with nine of the 10 most heavily trade stocks falling. Qatar Gas Transport QGTS.QA lost 1.8 percent, though Vodafone Qatar VFQS.QA rebounded 0.4 percent after a sharp loss on Monday.

The index in Abu Dhabi .ADI , which tends to be less volatile than most other Gulf markets and did not rise sharply earlier this month when they did, was flat.

(Reporting by Andrew Torchia) ((andrew.torchia@thomsonreuters.com)(+9715 6681 7277)(Reuters Messaging: andrew.torchia.thomsonreuters.com@reuters.net))